67564920 has 32 divisors (see below), whose sum is σ = 202695120. Its totient is φ = 18017280.

The previous prime is 67564909. The next prime is 67564927. The reversal of 67564920 is 2946576.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67564927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281401 + ... + 281640.

Almost surely, 2^67564920 is an apocalyptic number.

67564920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67564920 is an abundant number, since it is smaller than the sum of its proper divisors (135130200).

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

67564920 is a wasteful number, since it uses less digits than its factorization.

67564920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563055 (or 563051 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 67564920 is about 8219.7883184423. The cubic root of 67564920 is about 407.2931339907.

The spelling of 67564920 in words is "sixty-seven million, five hundred sixty-four thousand, nine hundred twenty".