64673600 has 84 divisors (see below), whose sum is σ = 161385504. Its totient is φ = 25505280.

The previous prime is 64673579. The next prime is 64673711. The reversal of 64673600 is 637646.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132557 + ... + 133043.

It is an arithmetic number, because the mean of its divisors is an integer number (1921256).

Almost surely, 2^64673600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64673600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80692752).

64673600 is an abundant number, since it is smaller than the sum of its proper divisors (96711904).

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

64673600 is a wasteful number, since it uses less digits than its factorization.

64673600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 64673600 is about 8041.9898035250. The cubic root of 64673600 is about 401.3984385598.

The spelling of 64673600 in words is "sixty-four million, six hundred seventy-three thousand, six hundred".