64826880 has 160 divisors (see below), whose sum is σ = 216843264. Its totient is φ = 16490496.

The previous prime is 64826869. The next prime is 64826911. The reversal of 64826880 is 8862846.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176457 + ... + 176823.

Almost surely, 2^64826880 is an apocalyptic number.

64826880 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 64826880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108421632).

64826880 is an abundant number, since it is smaller than the sum of its proper divisors (152016384).

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

64826880 is a wasteful number, since it uses less digits than its factorization.

64826880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 64826880 is about 8051.5141433149. The cubic root of 64826880 is about 401.7153005128.

The spelling of 64826880 in words is "sixty-four million, eight hundred twenty-six thousand, eight hundred eighty".