99995691 has 8 divisors (see below), whose sum is σ = 135317824. Its totient is φ = 65668680.

The previous prime is 99995681. The next prime is 99995699. The reversal of 99995691 is 19659999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99995691 - 2⁷ = 99995563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99995699) 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, 248545 + ... + 248946.

It is an arithmetic number, because the mean of its divisors is an integer number (16914728).

Almost surely, 2^99995691 is an apocalyptic number.

99995691 is a deficient number, since it is larger than the sum of its proper divisors (35322133).

99995691 is a wasteful number, since it uses less digits than its factorization.

99995691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497561.

The product of its digits is 1771470, while the sum is 57.

The square root of 99995691 is about 9999.7845476790. The cubic root of 99995691 is about 464.1522163968.

The spelling of 99995691 in words is "ninety-nine million, nine hundred ninety-five thousand, six hundred ninety-one".