64929966 has 32 divisors (see below), whose sum is σ = 136097280. Its totient is φ = 20612064.

The previous prime is 64929961. The next prime is 64930001. The reversal of 64929966 is 66992946.

It is a super-2 number, since 2×64929966² = 8431800969522312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64929961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35400 + ... + 37188.

It is an arithmetic number, because the mean of its divisors is an integer number (4253040).

Almost surely, 2^64929966 is an apocalyptic number.

64929966 is an abundant number, since it is smaller than the sum of its proper divisors (71167314).

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

64929966 is a wasteful number, since it uses less digits than its factorization.

64929966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its digits is 1259712, while the sum is 51.

The square root of 64929966 is about 8057.9132534422. The cubic root of 64929966 is about 401.9281201152.

The spelling of 64929966 in words is "sixty-four million, nine hundred twenty-nine thousand, nine hundred sixty-six".