64997196 has 24 divisors (see below), whose sum is σ = 165447744. Its totient is φ = 19696080.

The previous prime is 64997183. The next prime is 64997213. The reversal of 64997196 is 69179946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246070 + ... + 246333.

It is an arithmetic number, because the mean of its divisors is an integer number (6893656).

Almost surely, 2^64997196 is an apocalyptic number.

64997196 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64997196 is an abundant number, since it is smaller than the sum of its proper divisors (100450548).

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

64997196 is a wasteful number, since it uses less digits than its factorization.

64997196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492421 (or 492419 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The square root of 64997196 is about 8062.0838497252. The cubic root of 64997196 is about 402.0667941783.

It can be divided in two parts, 6499 and 7196, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 64997196 in words is "sixty-four million, nine hundred ninety-seven thousand, one hundred ninety-six".