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70361 = 71991
BaseRepresentation
bin10001001011011001
310120111222
4101023121
54222421
61301425
7412064
oct211331
9116458
1070361
1148955
1234875
1326045
141b8db
1515cab
hex112d9

70361 has 4 divisors (see below), whose sum is σ = 71424. Its totient is φ = 69300.

The previous prime is 70351. The next prime is 70373. The reversal of 70361 is 16307.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16307 = 23709.

It is a cyclic number.

It is not a de Polignac number, because 70361 - 26 = 70297 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (17856).

270361 is an apocalyptic number.

70361 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

70361 is a deficient number, since it is larger than the sum of its proper divisors (1063).

70361 is an equidigital number, since it uses as much as digits as its factorization.

70361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 70361 is about 265.2564796570. The cubic root of 70361 is about 41.2835784135.

Adding to 70361 its reverse (16307), we get a palindrome (86668).

The spelling of 70361 in words is "seventy thousand, three hundred sixty-one".

Divisors: 1 71 991 70361