99651270 has 16 divisors (see below), whose sum is σ = 239163120. Its totient is φ = 26573664.

The previous prime is 99651241. The next prime is 99651271. The reversal of 99651270 is 7215699.

It is a super-2 number, since 2×99651270² = 19860751225225800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99651271) 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, 1660825 + ... + 1660884.

It is an arithmetic number, because the mean of its divisors is an integer number (14947695).

Almost surely, 2^99651270 is an apocalyptic number.

99651270 is an abundant number, since it is smaller than the sum of its proper divisors (139511850).

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

99651270 is a wasteful number, since it uses less digits than its factorization.

99651270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321719.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 99651270 is about 9982.5482718592. The cubic root of 99651270 is about 463.6187011901.

The spelling of 99651270 in words is "ninety-nine million, six hundred fifty-one thousand, two hundred seventy".