64740988 has 12 divisors (see below), whose sum is σ = 122011960. Its totient is φ = 29880432.

The previous prime is 64740971. The next prime is 64740997. The reversal of 64740988 is 88904746.

It is a happy number.

It is a super-2 number, since 2×64740988² = 8382791054432288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622458 + ... + 622561.

Almost surely, 2^64740988 is an apocalyptic number.

It is an amenable number.

64740988 is a deficient number, since it is larger than the sum of its proper divisors (57270972).

64740988 is a wasteful number, since it uses less digits than its factorization.

64740988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245036 (or 1245034 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 64740988 is about 8046.1784717964. The cubic root of 64740988 is about 401.5378053107.

The spelling of 64740988 in words is "sixty-four million, seven hundred forty thousand, nine hundred eighty-eight".