86973497 has 4 divisors (see below), whose sum is σ = 93663780. Its totient is φ = 80283216.

The previous prime is 86973487. The next prime is 86973499. The reversal of 86973497 is 79437968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4145296 + 82828201 = 2036^2 + 9101^2 .

It is not a de Polignac number, because 86973497 - 2¹² = 86969401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86973499) 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, 3345122 + ... + 3345147.

It is an arithmetic number, because the mean of its divisors is an integer number (23415945).

Almost surely, 2^86973497 is an apocalyptic number.

It is an amenable number.

86973497 is a deficient number, since it is larger than the sum of its proper divisors (6690283).

86973497 is a wasteful number, since it uses less digits than its factorization.

86973497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690282.

The product of its digits is 2286144, while the sum is 53.

The square root of 86973497 is about 9325.9582349483. The cubic root of 86973497 is about 443.0597629425.

The spelling of 86973497 in words is "eighty-six million, nine hundred seventy-three thousand, four hundred ninety-seven".