64503272 has 8 divisors (see below), whose sum is σ = 120943650. Its totient is φ = 32251632.

The previous prime is 64503251. The next prime is 64503277. The reversal of 64503272 is 27230546.

It can be written as a sum of positive squares in only one way, i.e., 39363076 + 25140196 = 6274^2 + 5014^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64503277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4031447 + ... + 4031462.

Almost surely, 2^64503272 is an apocalyptic number.

It is an amenable number.

64503272 is a deficient number, since it is larger than the sum of its proper divisors (56440378).

64503272 is a wasteful number, since it uses less digits than its factorization.

64503272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8062915 (or 8062911 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 64503272 is about 8031.3929053434. The cubic root of 64503272 is about 401.0457469839.

The spelling of 64503272 in words is "sixty-four million, five hundred three thousand, two hundred seventy-two".