70556985 has 24 divisors (see below), whose sum is σ = 127617984. Its totient is φ = 35993760.

The previous prime is 70556951. The next prime is 70557001. The reversal of 70556985 is 58965507.

70556985 is a `hidden beast` number, since 7 + 0 + 5 + 569 + 85 = 666.

It is not a de Polignac number, because 70556985 - 2¹⁵ = 70524217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 70556985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33051 + ... + 35120.

It is an arithmetic number, because the mean of its divisors is an integer number (5317416).

Almost surely, 2^70556985 is an apocalyptic number.

It is an amenable number.

70556985 is a deficient number, since it is larger than the sum of its proper divisors (57060999).

70556985 is a wasteful number, since it uses less digits than its factorization.

70556985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68205 (or 68202 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 70556985 is about 8399.8205337971. The cubic root of 70556985 is about 413.2187359350.

The spelling of 70556985 in words is "seventy million, five hundred fifty-six thousand, nine hundred eighty-five".