64036992 has 128 divisors (see below), whose sum is σ = 183110400. Its totient is φ = 19768320.

The previous prime is 64036981. The next prime is 64036997. The reversal of 64036992 is 29963046.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 64036992.

It is not an unprimeable number, because it can be changed into a prime (64036997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488767 + ... + 488897.

It is an arithmetic number, because the mean of its divisors is an integer number (1430550).

Almost surely, 2^64036992 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 64036992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91555200).

64036992 is an abundant number, since it is smaller than the sum of its proper divisors (119073408).

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

64036992 is a wasteful number, since it uses less digits than its factorization.

64036992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 64036992 is about 8002.3116660125. The cubic root of 64036992 is about 400.0770518233.

The spelling of 64036992 in words is "sixty-four million, thirty-six thousand, nine hundred ninety-two".