64712655 has 96 divisors (see below), whose sum is σ = 138670080. Its totient is φ = 28019520.

The previous prime is 64712653. The next prime is 64712663. The reversal of 64712655 is 55621746.

It is a happy number.

64712655 is a `hidden beast` number, since 647 + 1 + 2 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 64712655 - 2¹ = 64712653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64712653) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1376842 + ... + 1376888.

It is an arithmetic number, because the mean of its divisors is an integer number (1444480).

Almost surely, 2^64712655 is an apocalyptic number.

64712655 is an abundant number, since it is smaller than the sum of its proper divisors (73957425).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64712655 is a wasteful number, since it uses less digits than its factorization.

64712655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 93 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 64712655 is about 8044.4176296361. The cubic root of 64712655 is about 401.4792209371.

Subtracting from 64712655 its reverse (55621746), we obtain a palindrome (9090909).

The spelling of 64712655 in words is "sixty-four million, seven hundred twelve thousand, six hundred fifty-five".