647262464 has 36 divisors (see below), whose sum is σ = 1294219920. Its totient is φ = 323074560.

The previous prime is 647262463. The next prime is 647262479. The reversal of 647262464 is 464262746.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (647262463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175067 + ... + 178725.

Almost surely, 2^647262464 is an apocalyptic number.

647262464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

647262464 is a deficient number, since it is larger than the sum of its proper divisors (646957456).

647262464 is an equidigital number, since it uses as much as digits as its factorization.

647262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366 (or 4352 counting only the distinct ones).

The product of its digits is 387072, while the sum is 41.

The square root of 647262464 is about 25441.3534231180. The cubic root of 647262464 is about 865.0213116916.

The spelling of 647262464 in words is "six hundred forty-seven million, two hundred sixty-two thousand, four hundred sixty-four".