64285680 has 40 divisors (see below), whose sum is σ = 199286352. Its totient is φ = 17142784.

The previous prime is 64285673. The next prime is 64285681. The reversal of 64285680 is 8658246.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64285681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133689 + ... + 134168.

Almost surely, 2^64285680 is an apocalyptic number.

64285680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64285680 is an abundant number, since it is smaller than the sum of its proper divisors (135000672).

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

64285680 is a wasteful number, since it uses less digits than its factorization.

64285680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267873 (or 267867 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 64285680 is about 8017.8351192825. The cubic root of 64285680 is about 400.5942832978.

The spelling of 64285680 in words is "sixty-four million, two hundred eighty-five thousand, six hundred eighty".