99618380 has 24 divisors (see below), whose sum is σ = 213651648. Its totient is φ = 38999168.

The previous prime is 99618377. The next prime is 99618383. The reversal of 99618380 is 8381699.

It is an interprime number because it is at equal distance from previous prime (99618377) and next prime (99618383).

It is not an unprimeable number, because it can be changed into a prime (99618383) 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, 52049 + ... + 53928.

It is an arithmetic number, because the mean of its divisors is an integer number (8902152).

Almost surely, 2^99618380 is an apocalyptic number.

It is an amenable number.

99618380 is an abundant number, since it is smaller than the sum of its proper divisors (114033268).

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

99618380 is a wasteful number, since it uses less digits than its factorization.

99618380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106033 (or 106031 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 99618380 is about 9980.9007609534. The cubic root of 99618380 is about 463.5676896409.

The spelling of 99618380 in words is "ninety-nine million, six hundred eighteen thousand, three hundred eighty".