64879692 has 12 divisors (see below), whose sum is σ = 151385976. Its totient is φ = 21626560.

The previous prime is 64879691. The next prime is 64879739. The reversal of 64879692 is 29697846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (64879691) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2703309 + ... + 2703332.

It is an arithmetic number, because the mean of its divisors is an integer number (12615498).

Almost surely, 2^64879692 is an apocalyptic number.

It is an amenable number.

64879692 is an abundant number, since it is smaller than the sum of its proper divisors (86506284).

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

64879692 is a wasteful number, since it uses less digits than its factorization.

64879692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406648 (or 5406646 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 64879692 is about 8054.7931072126. The cubic root of 64879692 is about 401.8243583086.

The spelling of 64879692 in words is "sixty-four million, eight hundred seventy-nine thousand, six hundred ninety-two".