64869792 has 96 divisors (see below), whose sum is σ = 186701760. Its totient is φ = 19599360.

The previous prime is 64869787. The next prime is 64869793. The reversal of 64869792 is 29796846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (64869793) 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, 73192 + ... + 74072.

It is an arithmetic number, because the mean of its divisors is an integer number (1944810).

Almost surely, 2^64869792 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 64869792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93350880).

64869792 is an abundant number, since it is smaller than the sum of its proper divisors (121831968).

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

64869792 is a wasteful number, since it uses less digits than its factorization.

64869792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 958 counting only the distinct ones).

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

The square root of 64869792 is about 8054.1785428435. The cubic root of 64869792 is about 401.8039191266.

The spelling of 64869792 in words is "sixty-four million, eight hundred sixty-nine thousand, seven hundred ninety-two".