65499012 has 36 divisors (see below), whose sum is σ = 169094016. Its totient is φ = 21367920.

The previous prime is 65498971. The next prime is 65499029. The reversal of 65499012 is 21099456.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×65499012² = 8580241145952288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17664 + ... + 21047.

It is an arithmetic number, because the mean of its divisors is an integer number (4697056).

Almost surely, 2^65499012 is an apocalyptic number.

It is an amenable number.

65499012 is an abundant number, since it is smaller than the sum of its proper divisors (103595004).

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

65499012 is a wasteful number, since it uses less digits than its factorization.

65499012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38768 (or 38763 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 65499012 is about 8093.1459890453. The cubic root of 65499012 is about 403.0988721483.

The spelling of 65499012 in words is "sixty-five million, four hundred ninety-nine thousand, twelve".