64665196 has 24 divisors (see below), whose sum is σ = 116576096. Its totient is φ = 31363200.

The previous prime is 64665187. The next prime is 64665199. The reversal of 64665196 is 69156646.

It is not an unprimeable number, because it can be changed into a prime (64665199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88585 + ... + 89311.

Almost surely, 2^64665196 is an apocalyptic number.

It is an amenable number.

64665196 is a deficient number, since it is larger than the sum of its proper divisors (51910900).

64665196 is a wasteful number, since it uses less digits than its factorization.

64665196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1367 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 64665196 is about 8041.4672790480. The cubic root of 64665196 is about 401.3810512559.

The spelling of 64665196 in words is "sixty-four million, six hundred sixty-five thousand, one hundred ninety-six".