70530 has 16 divisors (see below), whose sum is σ = 169344. Its totient is φ = 18800.

The previous prime is 70529. The next prime is 70537. The reversal of 70530 is 3507.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70530.

It is not an unprimeable number, because it can be changed into a prime (70537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146 + ... + 1205.

It is an arithmetic number, because the mean of its divisors is an integer number (10584).

2⁷⁰⁵³⁰ is an apocalyptic number.

70530 is an abundant number, since it is smaller than the sum of its proper divisors (98814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84672).

70530 is a wasteful number, since it uses less digits than its factorization.

70530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361.

The product of its (nonzero) digits is 105, while the sum is 15.

The square root of 70530 is about 265.5748482067. The cubic root of 70530 is about 41.3166049777.

The spelling of 70530 in words is "seventy thousand, five hundred thirty".