64669696 has 96 divisors (see below), whose sum is σ = 159606720. Its totient is φ = 25509888.

The previous prime is 64669679. The next prime is 64669733. The reversal of 64669696 is 69696646.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186195 + ... + 186541.

It is an arithmetic number, because the mean of its divisors is an integer number (1662570).

Almost surely, 2^64669696 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 64669696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79803360).

64669696 is an abundant number, since it is smaller than the sum of its proper divisors (94937024).

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

64669696 is a wasteful number, since it uses less digits than its factorization.

64669696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 369 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 52.

The square root of 64669696 is about 8041.7470738640. The cubic root of 64669696 is about 401.3903616369.

The spelling of 64669696 in words is "sixty-four million, six hundred sixty-nine thousand, six hundred ninety-six".