64748715 has 32 divisors (see below), whose sum is σ = 105912576. Its totient is φ = 33770880.

The previous prime is 64748711. The next prime is 64748729. The reversal of 64748715 is 51784746.

It is not a de Polignac number, because 64748715 - 2² = 64748711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64748711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162897 + ... + 163293.

It is an arithmetic number, because the mean of its divisors is an integer number (3309768).

Almost surely, 2^64748715 is an apocalyptic number.

64748715 is a deficient number, since it is larger than the sum of its proper divisors (41163861).

64748715 is a wasteful number, since it uses less digits than its factorization.

64748715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its digits is 188160, while the sum is 42.

The square root of 64748715 is about 8046.6586233045. The cubic root of 64748715 is about 401.5537795247.

The spelling of 64748715 in words is "sixty-four million, seven hundred forty-eight thousand, seven hundred fifteen".