64985892 has 24 divisors (see below), whose sum is σ = 152101152. Its totient is φ = 21595200.

The previous prime is 64985887. The next prime is 64985941. The reversal of 64985892 is 29858946.

It is a super-3 number, since 3×64985892³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4209 + ... + 12152.

It is an arithmetic number, because the mean of its divisors is an integer number (6337548).

Almost surely, 2^64985892 is an apocalyptic number.

It is an amenable number.

64985892 is an abundant number, since it is smaller than the sum of its proper divisors (87115260).

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

64985892 is a wasteful number, since it uses less digits than its factorization.

64985892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16699 (or 16697 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 64985892 is about 8061.3827598000. The cubic root of 64985892 is about 402.0434843187.

The spelling of 64985892 in words is "sixty-four million, nine hundred eighty-five thousand, eight hundred ninety-two".