86879845 has 8 divisors (see below), whose sum is σ = 112275576. Its totient is φ = 64157376.

The previous prime is 86879839. The next prime is 86879851. The reversal of 86879845 is 54897868.

It is an interprime number because it is at equal distance from previous prime (86879839) and next prime (86879851).

It can be written as a sum of positive squares in 4 ways, for example, as 5987809 + 80892036 = 2447^2 + 8994^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86879845 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668242 + ... + 668371.

It is an arithmetic number, because the mean of its divisors is an integer number (14034447).

Almost surely, 2^86879845 is an apocalyptic number.

It is an amenable number.

86879845 is a deficient number, since it is larger than the sum of its proper divisors (25395731).

86879845 is a wasteful number, since it uses less digits than its factorization.

86879845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336631.

The product of its digits is 3870720, while the sum is 55.

The square root of 86879845 is about 9320.9358435728. The cubic root of 86879845 is about 442.9006787139.

The spelling of 86879845 in words is "eighty-six million, eight hundred seventy-nine thousand, eight hundred forty-five".