1330690 has 8 divisors (see below), whose sum is σ = 2395260. Its totient is φ = 532272.

The previous prime is 1330649. The next prime is 1330691. The reversal of 1330690 is 960331.

It can be written as a sum of positive squares in 2 ways, for example, as 1279161 + 51529 = 1131^2 + 227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1330690² = 3541471752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1330691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66525 + ... + 66544.

2^1330690 is an apocalyptic number.

1330690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1330690 is a deficient number, since it is larger than the sum of its proper divisors (1064570).

1330690 is a wasteful number, since it uses less digits than its factorization.

1330690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133076.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 1330690 is about 1153.5553736167. Note that the first 3 decimals coincide. The cubic root of 1330690 is about 109.9914593920.

It can be divided in two parts, 13 and 30690, that added together give a palindrome (30703).

The spelling of 1330690 in words is "one million, three hundred thirty thousand, six hundred ninety".