64748688 has 20 divisors (see below), whose sum is σ = 167267568. Its totient is φ = 21582880.

The previous prime is 64748647. The next prime is 64748689. The reversal of 64748688 is 88684746.

It is a self number, because there is not a number n which added to its sum of digits gives 64748688.

It is not an unprimeable number, because it can be changed into a prime (64748689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674418 + ... + 674513.

Almost surely, 2^64748688 is an apocalyptic number.

It is an amenable number.

64748688 is an abundant number, since it is smaller than the sum of its proper divisors (102518880).

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

64748688 is a wasteful number, since it uses less digits than its factorization.

64748688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348942 (or 1348936 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 51.

The square root of 64748688 is about 8046.6569455893. The cubic root of 64748688 is about 401.5537237091.

The spelling of 64748688 in words is "sixty-four million, seven hundred forty-eight thousand, six hundred eighty-eight".