656425446 has 16 divisors (see below), whose sum is σ = 1313418864. Its totient is φ = 218713824.

The previous prime is 656425409. The next prime is 656425477. The reversal of 656425446 is 644524656.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 656425398 and 656425407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7825 + ... + 37068.

It is an arithmetic number, because the mean of its divisors is an integer number (82088679).

Almost surely, 2^656425446 is an apocalyptic number.

656425446 is an abundant number, since it is smaller than the sum of its proper divisors (656993418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656425446 is a wasteful number, since it uses less digits than its factorization.

656425446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47335.

The product of its digits is 691200, while the sum is 42.

The square root of 656425446 is about 25620.8010413414. The cubic root of 656425446 is about 869.0840962224.

The spelling of 656425446 in words is "six hundred fifty-six million, four hundred twenty-five thousand, four hundred forty-six".