83657157 has 8 divisors (see below), whose sum is σ = 111798720. Its totient is φ = 55643520.

The previous prime is 83657137. The next prime is 83657159. The reversal of 83657157 is 75175638.

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

It is not a de Polignac number, because 83657157 - 2⁷ = 83657029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83657159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30444 + ... + 33077.

It is an arithmetic number, because the mean of its divisors is an integer number (13974840).

Almost surely, 2^83657157 is an apocalyptic number.

It is an amenable number.

83657157 is a deficient number, since it is larger than the sum of its proper divisors (28141563).

83657157 is a wasteful number, since it uses less digits than its factorization.

83657157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63963.

The product of its digits is 176400, while the sum is 42.

The square root of 83657157 is about 9146.4286472918. The cubic root of 83657157 is about 437.3552731630.

The spelling of 83657157 in words is "eighty-three million, six hundred fifty-seven thousand, one hundred fifty-seven".