86980505 has 8 divisors (see below), whose sum is σ = 104428224. Its totient is φ = 69550000.

The previous prime is 86980489. The next prime is 86980547. The reversal of 86980505 is 50508968.

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

It is not a de Polignac number, because 86980505 - 2⁴ = 86980489 is a prime.

It is a Duffinian 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, 13580 + ... + 18930.

It is an arithmetic number, because the mean of its divisors is an integer number (13053528).

Almost surely, 2^86980505 is an apocalyptic number.

It is an amenable number.

86980505 is a deficient number, since it is larger than the sum of its proper divisors (17447719).

86980505 is a wasteful number, since it uses less digits than its factorization.

86980505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 86980505 is about 9326.3339528456. Note that the first 3 decimals coincide. The cubic root of 86980505 is about 443.0716626573.

The spelling of 86980505 in words is "eighty-six million, nine hundred eighty thousand, five hundred five".