656380473 has 16 divisors (see below), whose sum is σ = 1010513280. Its totient is φ = 371206656.

The previous prime is 656380447. The next prime is 656380493. The reversal of 656380473 is 374083656.

It is not a de Polignac number, because 656380473 - 2⁹ = 656379961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656380493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159078 + ... + 163151.

It is an arithmetic number, because the mean of its divisors is an integer number (63157080).

Almost surely, 2^656380473 is an apocalyptic number.

It is an amenable number.

656380473 is a deficient number, since it is larger than the sum of its proper divisors (354132807).

656380473 is a wasteful number, since it uses less digits than its factorization.

656380473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322336.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 656380473 is about 25619.9233605411. The cubic root of 656380473 is about 869.0642482148.

The spelling of 656380473 in words is "six hundred fifty-six million, three hundred eighty thousand, four hundred seventy-three".