86969997 has 8 divisors (see below), whose sum is σ = 128844480. Its totient is φ = 57979980.

The previous prime is 86969963. The next prime is 86970001. The reversal of 86969997 is 79996968.

It is not a de Polignac number, because 86969997 - 2¹⁵ = 86937229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86969917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1610529 + ... + 1610582.

It is an arithmetic number, because the mean of its divisors is an integer number (16105560).

Almost surely, 2^86969997 is an apocalyptic number.

It is an amenable number.

86969997 is a deficient number, since it is larger than the sum of its proper divisors (41874483).

86969997 is a wasteful number, since it uses less digits than its factorization.

86969997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221120 (or 3221114 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 63.

The square root of 86969997 is about 9325.7705847828. The cubic root of 86969997 is about 443.0538196378.

The spelling of 86969997 in words is "eighty-six million, nine hundred sixty-nine thousand, nine hundred ninety-seven".