656969423 has 8 divisors (see below), whose sum is σ = 717897600. Its totient is φ = 596241880.

The previous prime is 656969419. The next prime is 656969449. The reversal of 656969423 is 324969656.

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 656969423 - 2² = 656969419 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 (656969473) 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, 43265 + ... + 56442.

It is an arithmetic number, because the mean of its divisors is an integer number (89737200).

Almost surely, 2^656969423 is an apocalyptic number.

656969423 is a deficient number, since it is larger than the sum of its proper divisors (60928177).

656969423 is a wasteful number, since it uses less digits than its factorization.

656969423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100317.

The product of its digits is 2099520, while the sum is 50.

The square root of 656969423 is about 25631.4147678196. The cubic root of 656969423 is about 869.3240987139.

It can be divided in two parts, 656 and 969423, that added together give a palindrome (970079).

The spelling of 656969423 in words is "six hundred fifty-six million, nine hundred sixty-nine thousand, four hundred twenty-three".