64752490 has 64 divisors (see below), whose sum is σ = 139097088. Its totient is φ = 21427200.

The previous prime is 64752481. The next prime is 64752491. The reversal of 64752490 is 9425746.

It is a super-2 number, since 2×64752490² = 8385769922400200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64752491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57412 + ... + 58528.

It is an arithmetic number, because the mean of its divisors is an integer number (2173392).

Almost surely, 2^64752490 is an apocalyptic number.

64752490 is an abundant number, since it is smaller than the sum of its proper divisors (74344598).

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

64752490 is a wasteful number, since it uses less digits than its factorization.

64752490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 64752490 is about 8046.8931892998. The cubic root of 64752490 is about 401.5615832114.

The spelling of 64752490 in words is "sixty-four million, seven hundred fifty-two thousand, four hundred ninety".