64998912 has 80 divisors (see below), whose sum is σ = 188952192. Its totient is φ = 19691520.

The previous prime is 64998893. The next prime is 64998917. The reversal of 64998912 is 21989946.

It is a super-2 number, since 2×64998912² = 8449717122367488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64998917) 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, 14973 + ... + 18819.

Almost surely, 2^64998912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64998912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94476096).

64998912 is an abundant number, since it is smaller than the sum of its proper divisors (123953280).

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

64998912 is a wasteful number, since it uses less digits than its factorization.

64998912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3879 (or 3863 counting only the distinct ones).

The product of its digits is 279936, while the sum is 48.

The square root of 64998912 is about 8062.1902731206. The cubic root of 64998912 is about 402.0703324876.

The spelling of 64998912 in words is "sixty-four million, nine hundred ninety-eight thousand, nine hundred twelve".