664372562 has 16 divisors (see below), whose sum is σ = 1154527872. Its totient is φ = 280830240.

The previous prime is 664372547. The next prime is 664372567. The reversal of 664372562 is 265273466.

It is a super-2 number, since 2×664372562² = 882781802276887688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664372567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324014 + ... + 326057.

It is an arithmetic number, because the mean of its divisors is an integer number (72157992).

Almost surely, 2^664372562 is an apocalyptic number.

664372562 is a deficient number, since it is larger than the sum of its proper divisors (490155310).

664372562 is a wasteful number, since it uses less digits than its factorization.

664372562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650153.

The product of its digits is 362880, while the sum is 41.

The square root of 664372562 is about 25775.4255444988. The cubic root of 664372562 is about 872.5772706283.

The spelling of 664372562 in words is "six hundred sixty-four million, three hundred seventy-two thousand, five hundred sixty-two".