64724248 has 32 divisors (see below), whose sum is σ = 125172000. Its totient is φ = 31352832.

The previous prime is 64724237. The next prime is 64724263. The reversal of 64724248 is 84242746.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132661 + ... + 133147.

It is an arithmetic number, because the mean of its divisors is an integer number (3911625).

Almost surely, 2^64724248 is an apocalyptic number.

It is an amenable number.

64724248 is a deficient number, since it is larger than the sum of its proper divisors (60447752).

64724248 is a wasteful number, since it uses less digits than its factorization.

64724248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 975 counting only the distinct ones).

The product of its digits is 86016, while the sum is 37.

The square root of 64724248 is about 8045.1381591617. The cubic root of 64724248 is about 401.5031939437.

The spelling of 64724248 in words is "sixty-four million, seven hundred twenty-four thousand, two hundred forty-eight".