86744767 has 4 divisors (see below), whose sum is σ = 86809320. Its totient is φ = 86680216.

The previous prime is 86744731. The next prime is 86744797. The reversal of 86744767 is 76744768.

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

It is a cyclic number.

It is not a de Polignac number, because 86744767 - 2⁷ = 86744639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86744767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86744797) 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, 30217 + ... + 32962.

It is an arithmetic number, because the mean of its divisors is an integer number (21702330).

Almost surely, 2^86744767 is an apocalyptic number.

86744767 is a deficient number, since it is larger than the sum of its proper divisors (64553).

86744767 is a wasteful number, since it uses less digits than its factorization.

86744767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64552.

The product of its digits is 1580544, while the sum is 49.

The square root of 86744767 is about 9313.6870787030. The cubic root of 86744767 is about 442.6710237234.

Subtracting from 86744767 its reverse (76744768), we obtain a palindrome (9999999).

The spelling of 86744767 in words is "eighty-six million, seven hundred forty-four thousand, seven hundred sixty-seven".