86321497 has 4 divisors (see below), whose sum is σ = 86803920. Its totient is φ = 85839076.

The previous prime is 86321479. The next prime is 86321513. The reversal of 86321497 is 79412368.

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 86321497 - 2¹⁵ = 86288729 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86321437) 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, 240943 + ... + 241300.

It is an arithmetic number, because the mean of its divisors is an integer number (21700980).

Almost surely, 2^86321497 is an apocalyptic number.

It is an amenable number.

86321497 is a deficient number, since it is larger than the sum of its proper divisors (482423).

86321497 is a wasteful number, since it uses less digits than its factorization.

86321497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482422.

The product of its digits is 72576, while the sum is 40.

The square root of 86321497 is about 9290.9362822054. The cubic root of 86321497 is about 441.9498468923.

The spelling of 86321497 in words is "eighty-six million, three hundred twenty-one thousand, four hundred ninety-seven".