64503738 has 24 divisors (see below), whose sum is σ = 150509268. Its totient is φ = 19847232.

The previous prime is 64503721. The next prime is 64503757. The reversal of 64503738 is 83730546.

It is a happy number.

64503738 is a `hidden beast` number, since 645 + 0 + 3 + 7 + 3 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59954049 + 4549689 = 7743^2 + 2133^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137595 + ... + 138062.

Almost surely, 2^64503738 is an apocalyptic number.

64503738 is an abundant number, since it is smaller than the sum of its proper divisors (86005530).

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

64503738 is a wasteful number, since it uses less digits than its factorization.

64503738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275678 (or 275675 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 64503738 is about 8031.4219164479. The cubic root of 64503738 is about 401.0467127585.

The spelling of 64503738 in words is "sixty-four million, five hundred three thousand, seven hundred thirty-eight".