800070657 has 4 divisors (see below), whose sum is σ = 1066760880. Its totient is φ = 533380436.

The previous prime is 800070653. The next prime is 800070673. The reversal of 800070657 is 756070008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 800070657 - 2² = 800070653 is a prime.

It is a super-2 number, since 2×800070657² = 1280226112384823298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (800070653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133345107 + ... + 133345112.

It is an arithmetic number, because the mean of its divisors is an integer number (266690220).

Almost surely, 2^800070657 is an apocalyptic number.

It is an amenable number.

800070657 is a deficient number, since it is larger than the sum of its proper divisors (266690223).

800070657 is a wasteful number, since it uses less digits than its factorization.

800070657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266690222.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 800070657 is about 28285.5202709796. The cubic root of 800070657 is about 928.3450959798.

The spelling of 800070657 in words is "eight hundred million, seventy thousand, six hundred fifty-seven".