64437912 has 192 divisors, whose sum is σ = 222393600. Its totient is φ = 16369920.

The previous prime is 64437907. The next prime is 64437931. The reversal of 64437912 is 21973446.

64437912 is a `hidden beast` number, since 644 + 3 + 7 + 9 + 1 + 2 = 666.

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

It is a nude number because it is divisible by every one of its digits.

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, 326998 + ... + 327194.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^64437912 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 64437912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111196800).

64437912 is an abundant number, since it is smaller than the sum of its proper divisors (157955688).

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

64437912 is a wasteful number, since it uses less digits than its factorization.

64437912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 279 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 64437912 is about 8027.3228413961. The cubic root of 64437912 is about 400.9102437363.

The spelling of 64437912 in words is "sixty-four million, four hundred thirty-seven thousand, nine hundred twelve".