89685157 has 2 divisors, whose sum is σ = 89685158. Its totient is φ = 89685156.

The previous prime is 89685137. The next prime is 89685161. The reversal of 89685157 is 75158698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71927361 + 17757796 = 8481^2 + 4214^2 .

It is a cyclic number.

It is not a de Polignac number, because 89685157 - 2²³ = 81296549 is a prime.

It is a super-2 number, since 2×89685157² = 16086854772229298, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89685157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89685107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44842578 + 44842579.

It is an arithmetic number, because the mean of its divisors is an integer number (44842579).

Almost surely, 2^89685157 is an apocalyptic number.

It is an amenable number.

89685157 is a deficient number, since it is larger than the sum of its proper divisors (1).

89685157 is an equidigital number, since it uses as much as digits as its factorization.

89685157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 49.

The square root of 89685157 is about 9470.2247597404. The cubic root of 89685157 is about 447.6172941392.

The spelling of 89685157 in words is "eighty-nine million, six hundred eighty-five thousand, one hundred fifty-seven".