64992260 has 12 divisors (see below), whose sum is σ = 136483788. Its totient is φ = 25996896.

The previous prime is 64992247. The next prime is 64992269. The reversal of 64992260 is 6229946.

It can be written as a sum of positive squares in 2 ways, for example, as 8952064 + 56040196 = 2992^2 + 7486^2 .

It is not an unprimeable number, because it can be changed into a prime (64992269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624787 + ... + 1624826.

It is an arithmetic number, because the mean of its divisors is an integer number (11373649).

Almost surely, 2^64992260 is an apocalyptic number.

It is an amenable number.

64992260 is an abundant number, since it is smaller than the sum of its proper divisors (71491528).

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

64992260 is a wasteful number, since it uses less digits than its factorization.

64992260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249622 (or 3249620 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 64992260 is about 8061.7777195852. Note that the first 4 decimals coincide. The cubic root of 64992260 is about 402.0566160370.

The spelling of 64992260 in words is "sixty-four million, nine hundred ninety-two thousand, two hundred sixty".