64814904 has 192 divisors, whose sum is σ = 227485440. Its totient is φ = 16796160.

The previous prime is 64814899. The next prime is 64814921. The reversal of 64814904 is 40941846.

It is a happy number.

64814904 is a `hidden beast` number, since 648 + 1 + 4 + 9 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149472 + ... + 149904.

It is an arithmetic number, because the mean of its divisors is an integer number (1184820).

Almost surely, 2^64814904 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 64814904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113742720).

64814904 is an abundant number, since it is smaller than the sum of its proper divisors (162670536).

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

64814904 is a wasteful number, since it uses less digits than its factorization.

64814904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 64814904 is about 8050.7703979185. The cubic root of 64814904 is about 401.6905616044.

The spelling of 64814904 in words is "sixty-four million, eight hundred fourteen thousand, nine hundred four".