86690739 has 4 divisors (see below), whose sum is σ = 115587656. Its totient is φ = 57793824.

The previous prime is 86690719. The next prime is 86690767. The reversal of 86690739 is 93709668.

It is a happy number.

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

It is not a de Polignac number, because 86690739 - 2⁵ = 86690707 is a prime.

It is a super-2 number, since 2×86690739² = 15030568456732242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86690719) 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, 14448454 + ... + 14448459.

It is an arithmetic number, because the mean of its divisors is an integer number (28896914).

Almost surely, 2^86690739 is an apocalyptic number.

86690739 is a deficient number, since it is larger than the sum of its proper divisors (28896917).

86690739 is a wasteful number, since it uses less digits than its factorization.

86690739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28896916.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 86690739 is about 9310.7861644439. The cubic root of 86690739 is about 442.5791004177.

The spelling of 86690739 in words is "eighty-six million, six hundred ninety thousand, seven hundred thirty-nine".