99947670 has 32 divisors (see below), whose sum is σ = 240172128. Its totient is φ = 26619648.

The previous prime is 99947651. The next prime is 99947677. The reversal of 99947670 is 7674999.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99947677) 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, 31392 + ... + 34428.

It is an arithmetic number, because the mean of its divisors is an integer number (7505379).

Almost surely, 2^99947670 is an apocalyptic number.

99947670 is an abundant number, since it is smaller than the sum of its proper divisors (140224458).

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

99947670 is a wasteful number, since it uses less digits than its factorization.

99947670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144.

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 99947670 is about 9997.3831576068. The cubic root of 99947670 is about 464.0779044530.

The spelling of 99947670 in words is "ninety-nine million, nine hundred forty-seven thousand, six hundred seventy".