99773646 has 32 divisors (see below), whose sum is σ = 241470720. Its totient is φ = 26829696.

The previous prime is 99773627. The next prime is 99773647. The reversal of 99773646 is 64637799.

It is a super-2 number, since 2×99773646² = 19909560872266632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99773647) 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, 69156 + ... + 70583.

It is an arithmetic number, because the mean of its divisors is an integer number (7545960).

Almost surely, 2^99773646 is an apocalyptic number.

99773646 is an abundant number, since it is smaller than the sum of its proper divisors (141697074).

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

99773646 is a wasteful number, since it uses less digits than its factorization.

99773646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139768.

The product of its digits is 1714608, while the sum is 51.

The square root of 99773646 is about 9988.6758882246. The cubic root of 99773646 is about 463.8084047210.

The spelling of 99773646 in words is "ninety-nine million, seven hundred seventy-three thousand, six hundred forty-six".