497978560 has 112 divisors (see below), whose sum is σ = 1230745824. Its totient is φ = 191766528.

The previous prime is 497978539. The next prime is 497978627. The reversal of 497978560 is 65879794.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1621927 + ... + 1622233.

It is an arithmetic number, because the mean of its divisors is an integer number (10988802).

Almost surely, 2^497978560 is an apocalyptic number.

497978560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497978560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615372912).

497978560 is an abundant number, since it is smaller than the sum of its proper divisors (732767264).

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

497978560 is a wasteful number, since it uses less digits than its factorization.

497978560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The square root of 497978560 is about 22315.4332245646. The cubic root of 497978560 is about 792.6294693060.

The spelling of 497978560 in words is "four hundred ninety-seven million, nine hundred seventy-eight thousand, five hundred sixty".