86507779 has 8 divisors (see below), whose sum is σ = 91146240. Its totient is φ = 81877896.

The previous prime is 86507767. The next prime is 86507791. The reversal of 86507779 is 97770568.

It is an interprime number because it is at equal distance from previous prime (86507767) and next prime (86507791).

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

It is a cyclic number.

It is not a de Polignac number, because 86507779 - 2⁷ = 86507651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86507479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38094 + ... + 40300.

It is an arithmetic number, because the mean of its divisors is an integer number (11393280).

Almost surely, 2^86507779 is an apocalyptic number.

86507779 is a deficient number, since it is larger than the sum of its proper divisors (4638461).

86507779 is a wasteful number, since it uses less digits than its factorization.

86507779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 86507779 is about 9300.9558110981. The cubic root of 86507779 is about 442.2675280968.

The spelling of 86507779 in words is "eighty-six million, five hundred seven thousand, seven hundred seventy-nine".