70056660 has 48 divisors (see below), whose sum is σ = 207700416. Its totient is φ = 17582592.

The previous prime is 70056641. The next prime is 70056661. The reversal of 70056660 is 6665007.

It is a super-2 number, since 2×70056660² = 9815871220711200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70056661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33322 + ... + 35361.

It is an arithmetic number, because the mean of its divisors is an integer number (4327092).

Almost surely, 2^70056660 is an apocalyptic number.

It is an amenable number.

70056660 is an abundant number, since it is smaller than the sum of its proper divisors (137643756).

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

70056660 is a wasteful number, since it uses less digits than its factorization.

70056660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68712 (or 68710 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 70056660 is about 8369.9856630702. The cubic root of 70056660 is about 412.2396961950.

The spelling of 70056660 in words is "seventy million, fifty-six thousand, six hundred sixty".