64164690 has 64 divisors (see below), whose sum is σ = 172782720. Its totient is φ = 16943040.

The previous prime is 64164649. The next prime is 64164719. The reversal of 64164690 is 9646146.

64164690 is a `hidden beast` number, since 6 + 4 + 1 + 646 + 9 + 0 = 666.

64164690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64164690² = 8234214885592200, which contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 27780 + ... + 30000.

It is an arithmetic number, because the mean of its divisors is an integer number (2699730).

Almost surely, 2^64164690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64164690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86391360).

64164690 is an abundant number, since it is smaller than the sum of its proper divisors (108618030).

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

64164690 is a wasteful number, since it uses less digits than its factorization.

64164690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344 (or 2338 counting only the distinct ones).

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

The square root of 64164690 is about 8010.2865117298. The cubic root of 64164690 is about 400.3428102855.

The spelling of 64164690 in words is "sixty-four million, one hundred sixty-four thousand, six hundred ninety".