86973137 has 4 divisors (see below), whose sum is σ = 87069936. Its totient is φ = 86876340.

The previous prime is 86973119. The next prime is 86973157. The reversal of 86973137 is 73137968.

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 86973137 - 2⁸ = 86972881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86973157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47039 + ... + 48852.

It is an arithmetic number, because the mean of its divisors is an integer number (21767484).

Almost surely, 2^86973137 is an apocalyptic number.

It is an amenable number.

86973137 is a deficient number, since it is larger than the sum of its proper divisors (96799).

86973137 is an equidigital number, since it uses as much as digits as its factorization.

86973137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96798.

The product of its digits is 190512, while the sum is 44.

The square root of 86973137 is about 9325.9389339626. The cubic root of 86973137 is about 443.0591516385.

The spelling of 86973137 in words is "eighty-six million, nine hundred seventy-three thousand, one hundred thirty-seven".