99697157 has 32 divisors (see below), whose sum is σ = 124692480. Its totient is φ = 77837760.

The previous prime is 99697151. The next prime is 99697181. The reversal of 99697157 is 75179699.

It is not a de Polignac number, because 99697157 - 2⁴ = 99697141 is a prime.

It is a super-2 number, since 2×99697157² = 19879046227765298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99697099 and 99697108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99697151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 611558 + ... + 611720.

It is an arithmetic number, because the mean of its divisors is an integer number (3896640).

Almost surely, 2^99697157 is an apocalyptic number.

It is an amenable number.

99697157 is a deficient number, since it is larger than the sum of its proper divisors (24995323).

99697157 is a wasteful number, since it uses less digits than its factorization.

99697157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its digits is 1071630, while the sum is 53.

The square root of 99697157 is about 9984.8463683724. The cubic root of 99697157 is about 463.6898520036.

The spelling of 99697157 in words is "ninety-nine million, six hundred ninety-seven thousand, one hundred fifty-seven".