64761912 has 48 divisors (see below), whose sum is σ = 177526440. Its totient is φ = 21325248.

The previous prime is 64761889. The next prime is 64761923. The reversal of 64761912 is 21916746.

64761912 is a `hidden beast` number, since 647 + 6 + 1 + 9 + 1 + 2 = 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 11 ways as a sum of consecutive naturals, for example, 558 + ... + 11394.

Almost surely, 2^64761912 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 64761912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88763220).

64761912 is an abundant number, since it is smaller than the sum of its proper divisors (112764528).

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

64761912 is a wasteful number, since it uses less digits than its factorization.

64761912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10932 (or 10925 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 64761912 is about 8047.4786113416. The cubic root of 64761912 is about 401.5810590634.

The spelling of 64761912 in words is "sixty-four million, seven hundred sixty-one thousand, nine hundred twelve".