99641270 has 16 divisors (see below), whose sum is σ = 179640720. Its totient is φ = 39792864.

The previous prime is 99641257. The next prime is 99641291. The reversal of 99641270 is 7214699.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100 + ... + 14159.

It is an arithmetic number, because the mean of its divisors is an integer number (11227545).

Almost surely, 2^99641270 is an apocalyptic number.

99641270 is a deficient number, since it is larger than the sum of its proper divisors (79999450).

99641270 is a wasteful number, since it uses less digits than its factorization.

99641270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15919.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 99641270 is about 9982.0473851811. The cubic root of 99641270 is about 463.6031926334.

The spelling of 99641270 in words is "ninety-nine million, six hundred forty-one thousand, two hundred seventy".