88691137 has 4 divisors (see below), whose sum is σ = 89552320. Its totient is φ = 87829956.

The previous prime is 88691129. The next prime is 88691147. The reversal of 88691137 is 73119688.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88691137 - 2³ = 88691129 is a prime.

It is a super-2 number, since 2×88691137² = 15732235564705538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 88691093 and 88691102.

It is not an unprimeable number, because it can be changed into a prime (88691147) 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 3 ways as a sum of consecutive naturals, for example, 430437 + ... + 430642.

It is an arithmetic number, because the mean of its divisors is an integer number (22388080).

Almost surely, 2^88691137 is an apocalyptic number.

It is an amenable number.

88691137 is a deficient number, since it is larger than the sum of its proper divisors (861183).

88691137 is a wasteful number, since it uses less digits than its factorization.

88691137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861182.

The product of its digits is 72576, while the sum is 43.

The square root of 88691137 is about 9417.5971988613. The cubic root of 88691137 is about 445.9574335829.

The spelling of 88691137 in words is "eighty-eight million, six hundred ninety-one thousand, one hundred thirty-seven".