99649536 has 144 divisors (see below), whose sum is σ = 309975120. Its totient is φ = 28385280.

The previous prime is 99649523. The next prime is 99649549. The reversal of 99649536 is 63594699.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99649523) and next prime (99649549).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300891 + ... + 301221.

It is an arithmetic number, because the mean of its divisors is an integer number (2152605).

Almost surely, 2^99649536 is an apocalyptic number.

99649536 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99649536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154987560).

99649536 is an abundant number, since it is smaller than the sum of its proper divisors (210325584).

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

99649536 is a wasteful number, since it uses less digits than its factorization.

99649536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 343 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 51.

The square root of 99649536 is about 9982.4614199104. The cubic root of 99649536 is about 463.6160120807.

The spelling of 99649536 in words is "ninety-nine million, six hundred forty-nine thousand, five hundred thirty-six".