64942992 has 160 divisors (see below), whose sum is σ = 203558400. Its totient is φ = 19740672.

The previous prime is 64942957. The next prime is 64943003. The reversal of 64942992 is 29924946.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271609 + ... + 271847.

It is an arithmetic number, because the mean of its divisors is an integer number (1272240).

Almost surely, 2^64942992 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 64942992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101779200).

64942992 is an abundant number, since it is smaller than the sum of its proper divisors (138615408).

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

64942992 is a wasteful number, since it uses less digits than its factorization.

64942992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 298 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 64942992 is about 8058.7214866876. The cubic root of 64942992 is about 401.9549960758.

The spelling of 64942992 in words is "sixty-four million, nine hundred forty-two thousand, nine hundred ninety-two".