99864764 has 24 divisors (see below), whose sum is σ = 182448000. Its totient is φ = 47773440.

The previous prime is 99864761. The next prime is 99864797. The reversal of 99864764 is 46746899.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99864761) 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, 6512 + ... + 15560.

It is an arithmetic number, because the mean of its divisors is an integer number (7602000).

Almost surely, 2^99864764 is an apocalyptic number.

It is an amenable number.

99864764 is a deficient number, since it is larger than the sum of its proper divisors (82583236).

99864764 is a wasteful number, since it uses less digits than its factorization.

99864764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9173 (or 9171 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 99864764 is about 9993.2359123559. The cubic root of 99864764 is about 463.9495523334.

The spelling of 99864764 in words is "ninety-nine million, eight hundred sixty-four thousand, seven hundred sixty-four".