64272808 has 8 divisors (see below), whose sum is σ = 120511530. Its totient is φ = 32136400.

The previous prime is 64272797. The next prime is 64272809. The reversal of 64272808 is 80827246.

It can be written as a sum of positive squares in only one way, i.e., 45454564 + 18818244 = 6742^2 + 4338^2 .

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 (64272809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4017043 + ... + 4017058.

Almost surely, 2^64272808 is an apocalyptic number.

It is an amenable number.

64272808 is a deficient number, since it is larger than the sum of its proper divisors (56238722).

64272808 is a wasteful number, since it uses less digits than its factorization.

64272808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034107 (or 8034103 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 64272808 is about 8017.0323686511. The cubic root of 64272808 is about 400.5675443527.

The spelling of 64272808 in words is "sixty-four million, two hundred seventy-two thousand, eight hundred eight".