491656604 has 24 divisors (see below), whose sum is σ = 895994400. Its totient is φ = 235771200.

The previous prime is 491656591. The next prime is 491656619. The reversal of 491656604 is 406656194.

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, 3482 + ... + 31550.

It is an arithmetic number, because the mean of its divisors is an integer number (37333100).

Almost surely, 2^491656604 is an apocalyptic number.

It is an amenable number.

491656604 is a deficient number, since it is larger than the sum of its proper divisors (404337796).

491656604 is a wasteful number, since it uses less digits than its factorization.

491656604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28253 (or 28251 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 491656604 is about 22173.3309180195. The cubic root of 491656604 is about 789.2609677851.

The spelling of 491656604 in words is "four hundred ninety-one million, six hundred fifty-six thousand, six hundred four".