64318992 has 40 divisors (see below), whose sum is σ = 166596480. Its totient is φ = 21383040.

The previous prime is 64318981. The next prime is 64318993. The reversal of 64318992 is 29981346.

64318992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64318993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19134 + ... + 22242.

It is an arithmetic number, because the mean of its divisors is an integer number (4164912).

Almost surely, 2^64318992 is an apocalyptic number.

It is an amenable number.

64318992 is an abundant number, since it is smaller than the sum of its proper divisors (102277488).

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

64318992 is a wasteful number, since it uses less digits than its factorization.

64318992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551 (or 3545 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 64318992 is about 8019.9122189710. The cubic root of 64318992 is about 400.6634655918.

The spelling of 64318992 in words is "sixty-four million, three hundred eighteen thousand, nine hundred ninety-two".