86615479 has 4 divisors (see below), whose sum is σ = 87473160. Its totient is φ = 85757800.

The previous prime is 86615467. The next prime is 86615491. The reversal of 86615479 is 97451668.

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

It is an interprime number because it is at equal distance from previous prime (86615467) and next prime (86615491).

It is a cyclic number.

It is not a de Polignac number, because 86615479 - 2¹¹ = 86613431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86618479) 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, 428689 + ... + 428890.

It is an arithmetic number, because the mean of its divisors is an integer number (21868290).

Almost surely, 2^86615479 is an apocalyptic number.

86615479 is a deficient number, since it is larger than the sum of its proper divisors (857681).

86615479 is a wasteful number, since it uses less digits than its factorization.

86615479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857680.

The product of its digits is 362880, while the sum is 46.

The square root of 86615479 is about 9306.7437377420. The cubic root of 86615479 is about 442.4509892839.

The spelling of 86615479 in words is "eighty-six million, six hundred fifteen thousand, four hundred seventy-nine".