99685147 has 2 divisors, whose sum is σ = 99685148. Its totient is φ = 99685146.

The previous prime is 99685121. The next prime is 99685171. The reversal of 99685147 is 74158699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99685147 - 2¹⁵ = 99652379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99685147.

It is not a weakly prime, because it can be changed into another prime (99685247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49842573 + 49842574.

It is an arithmetic number, because the mean of its divisors is an integer number (49842574).

Almost surely, 2^99685147 is an apocalyptic number.

99685147 is a deficient number, since it is larger than the sum of its proper divisors (1).

99685147 is an equidigital number, since it uses as much as digits as its factorization.

99685147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 99685147 is about 9984.2449389025. The cubic root of 99685147 is about 463.6712318178.

The spelling of 99685147 in words is "ninety-nine million, six hundred eighty-five thousand, one hundred forty-seven".