64503036 has 36 divisors (see below), whose sum is σ = 175592872. Its totient is φ = 19846944.

The previous prime is 64503013. The next prime is 64503037. The reversal of 64503036 is 63030546.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64503037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68446 + ... + 69381.

Almost surely, 2^64503036 is an apocalyptic number.

It is an amenable number.

64503036 is an abundant number, since it is smaller than the sum of its proper divisors (111089836).

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

64503036 is a wasteful number, since it uses less digits than its factorization.

64503036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137850 (or 137845 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 64503036 is about 8031.3782129844. The cubic root of 64503036 is about 401.0452578774.

The spelling of 64503036 in words is "sixty-four million, five hundred three thousand, thirty-six".