64551315 has 16 divisors (see below), whose sum is σ = 103827456. Its totient is φ = 34245600.

The previous prime is 64551313. The next prime is 64551323. The reversal of 64551315 is 51315546.

It is not a de Polignac number, because 64551315 - 2¹ = 64551313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64551313) 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, 8401 + ... + 14130.

It is an arithmetic number, because the mean of its divisors is an integer number (6489216).

Almost surely, 2^64551315 is an apocalyptic number.

64551315 is a deficient number, since it is larger than the sum of its proper divisors (39276141).

64551315 is a wasteful number, since it uses less digits than its factorization.

64551315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22730.

The product of its digits is 9000, while the sum is 30.

The square root of 64551315 is about 8034.3832992956. The cubic root of 64551315 is about 401.1452905608.

The spelling of 64551315 in words is "sixty-four million, five hundred fifty-one thousand, three hundred fifteen".