64914945 has 16 divisors (see below), whose sum is σ = 105328512. Its totient is φ = 34133120.

The previous prime is 64914937. The next prime is 64914953. The reversal of 64914945 is 54941946.

It is an interprime number because it is at equal distance from previous prime (64914937) and next prime (64914953).

It is not a de Polignac number, because 64914945 - 2³ = 64914937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64914897 and 64914906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29412 + ... + 31541.

It is an arithmetic number, because the mean of its divisors is an integer number (6583032).

Almost surely, 2^64914945 is an apocalyptic number.

It is an amenable number.

64914945 is a deficient number, since it is larger than the sum of its proper divisors (40413567).

64914945 is a wasteful number, since it uses less digits than its factorization.

64914945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61032.

The product of its digits is 155520, while the sum is 42.

The square root of 64914945 is about 8056.9811343952. The cubic root of 64914945 is about 401.8971234980.

The spelling of 64914945 in words is "sixty-four million, nine hundred fourteen thousand, nine hundred forty-five".