497664240 has 40 divisors (see below), whose sum is σ = 1542759888. Its totient is φ = 132710400.

The previous prime is 497664229. The next prime is 497664253. The reversal of 497664240 is 42466794.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 497664192 and 497664201.

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, 1036561 + ... + 1037040.

Almost surely, 2^497664240 is an apocalyptic number.

497664240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

497664240 is an abundant number, since it is smaller than the sum of its proper divisors (1045095648).

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

497664240 is a wasteful number, since it uses less digits than its factorization.

497664240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073617 (or 2073611 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 497664240 is about 22308.3894532976. The cubic root of 497664240 is about 792.4626671239.

The spelling of 497664240 in words is "four hundred ninety-seven million, six hundred sixty-four thousand, two hundred forty".