656253779 has 8 divisors (see below), whose sum is σ = 685047552. Its totient is φ = 627481800.

The previous prime is 656253761. The next prime is 656253797. The reversal of 656253779 is 977352656.

It is an interprime number because it is at equal distance from previous prime (656253761) and next prime (656253797).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 656253779 - 2⁸ = 656253523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656253379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98504 + ... + 104954.

It is an arithmetic number, because the mean of its divisors is an integer number (85630944).

Almost surely, 2^656253779 is an apocalyptic number.

656253779 is a deficient number, since it is larger than the sum of its proper divisors (28793773).

656253779 is a wasteful number, since it uses less digits than its factorization.

656253779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10897.

The product of its digits is 2381400, while the sum is 50.

The square root of 656253779 is about 25617.4506733203. The cubic root of 656253779 is about 869.0083292698.

The spelling of 656253779 in words is "six hundred fifty-six million, two hundred fifty-three thousand, seven hundred seventy-nine".