64672371 has 16 divisors (see below), whose sum is σ = 100854400. Its totient is φ = 40845384.

The previous prime is 64672367. The next prime is 64672397. The reversal of 64672371 is 17327646.

64672371 is a `hidden beast` number, since 646 + 7 + 2 + 3 + 7 + 1 = 666.

It is not a de Polignac number, because 64672371 - 2² = 64672367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64672331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62521 + ... + 63546.

It is an arithmetic number, because the mean of its divisors is an integer number (6303400).

Almost surely, 2^64672371 is an apocalyptic number.

64672371 is a deficient number, since it is larger than the sum of its proper divisors (36182029).

64672371 is a wasteful number, since it uses less digits than its factorization.

64672371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126095 (or 126089 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 64672371 is about 8041.9133917246. The cubic root of 64672371 is about 401.3958959365.

The spelling of 64672371 in words is "sixty-four million, six hundred seventy-two thousand, three hundred seventy-one".