497908656 has 120 divisors (see below), whose sum is σ = 1647528480. Its totient is φ = 137346048.

The previous prime is 497908591. The next prime is 497908673. The reversal of 497908656 is 656809794.

497908656 is a `hidden beast` number, since 497 + 90 + 8 + 65 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20716 + ... + 37748.

It is an arithmetic number, because the mean of its divisors is an integer number (13729404).

Almost surely, 2^497908656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497908656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823764240).

497908656 is an abundant number, since it is smaller than the sum of its proper divisors (1149619824).

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

497908656 is a wasteful number, since it uses less digits than its factorization.

497908656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17083 (or 17074 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 497908656 is about 22313.8668993073. The cubic root of 497908656 is about 792.5923789788.

The spelling of 497908656 in words is "four hundred ninety-seven million, nine hundred eight thousand, six hundred fifty-six".