70090785 has 32 divisors (see below), whose sum is σ = 125280000. Its totient is φ = 37179648.

The previous prime is 70090763. The next prime is 70090789. The reversal of 70090785 is 58709007.

It is not a de Polignac number, because 70090785 - 2⁸ = 70090529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70090789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25561 + ... + 28169.

It is an arithmetic number, because the mean of its divisors is an integer number (3915000).

Almost surely, 2^70090785 is an apocalyptic number.

It is an amenable number.

70090785 is a deficient number, since it is larger than the sum of its proper divisors (55189215).

70090785 is a wasteful number, since it uses less digits than its factorization.

70090785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 70090785 is about 8372.0239488430. The cubic root of 70090785 is about 412.3066201015.

The spelling of 70090785 in words is "seventy million, ninety thousand, seven hundred eighty-five".