64166928 has 80 divisors (see below), whose sum is σ = 190333056. Its totient is φ = 18247680.

The previous prime is 64166887. The next prime is 64166969. The reversal of 64166928 is 82966146.

It is an interprime number because it is at equal distance from previous prime (64166887) and next prime (64166969).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 64166928.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118338 + ... + 118878.

Almost surely, 2^64166928 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 64166928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95166528).

64166928 is an abundant number, since it is smaller than the sum of its proper divisors (126166128).

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

64166928 is a wasteful number, since it uses less digits than its factorization.

64166928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 906 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 64166928 is about 8010.4262058894. The cubic root of 64166928 is about 400.3474647499.

The spelling of 64166928 in words is "sixty-four million, one hundred sixty-six thousand, nine hundred twenty-eight".