99774824 has 16 divisors (see below), whose sum is σ = 188050020. Its totient is φ = 49628160.

The previous prime is 99774823. The next prime is 99774839. The reversal of 99774824 is 42847799.

It can be written as a sum of positive squares in 2 ways, for example, as 78889924 + 20884900 = 8882^2 + 4570^2 .

It is not an unprimeable number, because it can be changed into a prime (99774823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30767 + ... + 33854.

Almost surely, 2^99774824 is an apocalyptic number.

It is an amenable number.

99774824 is a deficient number, since it is larger than the sum of its proper divisors (88275196).

99774824 is a wasteful number, since it uses less digits than its factorization.

99774824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64820 (or 64816 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 99774824 is about 9988.7348548252. The cubic root of 99774824 is about 463.8102300666.

Subtracting from 99774824 its reverse (42847799), we obtain a square (56927025 = 7545²).

The spelling of 99774824 in words is "ninety-nine million, seven hundred seventy-four thousand, eight hundred twenty-four".