70645785 has 16 divisors (see below), whose sum is σ = 129181056. Its totient is φ = 32295168.

The previous prime is 70645741. The next prime is 70645789. The reversal of 70645785 is 58754607.

It is not a de Polignac number, because 70645785 - 2⁶ = 70645721 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70645789) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 336304 + ... + 336513.

It is an arithmetic number, because the mean of its divisors is an integer number (8073816).

Almost surely, 2^70645785 is an apocalyptic number.

It is an amenable number.

70645785 is a deficient number, since it is larger than the sum of its proper divisors (58535271).

70645785 is a wasteful number, since it uses less digits than its factorization.

70645785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672832.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 70645785 is about 8405.1046989315. The cubic root of 70645785 is about 413.3920163964.

The spelling of 70645785 in words is "seventy million, six hundred forty-five thousand, seven hundred eighty-five".