656898607 has 8 divisors (see below), whose sum is σ = 685956096. Its totient is φ = 627882552.

The previous prime is 656898553. The next prime is 656898611. The reversal of 656898607 is 706898656.

It is a happy number.

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 656898607 - 2¹⁹ = 656374319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656898617) 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, 24598 + ... + 43804.

It is an arithmetic number, because the mean of its divisors is an integer number (85744512).

Almost surely, 2^656898607 is an apocalyptic number.

656898607 is a deficient number, since it is larger than the sum of its proper divisors (29057489).

656898607 is a wasteful number, since it uses less digits than its factorization.

656898607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20717.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The square root of 656898607 is about 25630.0333007977. The cubic root of 656898607 is about 869.2928622183.

The spelling of 656898607 in words is "six hundred fifty-six million, eight hundred ninety-eight thousand, six hundred seven".