64921092 has 24 divisors (see below), whose sum is σ = 152156256. Its totient is φ = 21544128.

The previous prime is 64921067. The next prime is 64921093. The reversal of 64921092 is 29012946.

It is not an unprimeable number, because it can be changed into a prime (64921093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9193 + ... + 14640.

It is an arithmetic number, because the mean of its divisors is an integer number (6339844).

Almost surely, 2^64921092 is an apocalyptic number.

It is an amenable number.

64921092 is an abundant number, since it is smaller than the sum of its proper divisors (87235164).

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

64921092 is a wasteful number, since it uses less digits than its factorization.

64921092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24067 (or 24065 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 64921092 is about 8057.3625957878. The cubic root of 64921092 is about 401.9098087312.

The spelling of 64921092 in words is "sixty-four million, nine hundred twenty-one thousand, ninety-two".