86072137 has 4 divisors (see below), whose sum is σ = 86091280. Its totient is φ = 86052996.

The previous prime is 86072131. The next prime is 86072149. The reversal of 86072137 is 73127068.

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 86072137 - 2⁷ = 86072009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86072131) 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, 1258 + ... + 13180.

It is an arithmetic number, because the mean of its divisors is an integer number (21522820).

Almost surely, 2^86072137 is an apocalyptic number.

It is an amenable number.

86072137 is a deficient number, since it is larger than the sum of its proper divisors (19143).

86072137 is a wasteful number, since it uses less digits than its factorization.

86072137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19142.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 86072137 is about 9277.5070466155. The cubic root of 86072137 is about 441.5238776740.

The spelling of 86072137 in words is "eighty-six million, seventy-two thousand, one hundred thirty-seven".