64693080 has 160 divisors (see below), whose sum is σ = 223201440. Its totient is φ = 16796160.

The previous prime is 64693051. The next prime is 64693093. The reversal of 64693080 is 8039646.

64693080 is a `hidden beast` number, since 646 + 9 + 3 + 0 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 132597 + ... + 133083.

It is an arithmetic number, because the mean of its divisors is an integer number (1395009).

Almost surely, 2^64693080 is an apocalyptic number.

64693080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64693080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111600720).

64693080 is an abundant number, since it is smaller than the sum of its proper divisors (158508360).

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

64693080 is a wasteful number, since it uses less digits than its factorization.

64693080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 64693080 is about 8043.2008553809. The cubic root of 64693080 is about 401.4387355622.

The spelling of 64693080 in words is "sixty-four million, six hundred ninety-three thousand, eighty".