86869745 has 16 divisors (see below), whose sum is σ = 110798928. Its totient is φ = 65157120.

The previous prime is 86869733. The next prime is 86869763. The reversal of 86869745 is 54796868.

It can be written as a sum of positive squares in 8 ways, for example, as 1787569 + 85082176 = 1337^2 + 9224^2 .

It is not a de Polignac number, because 86869745 - 2⁶ = 86869681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22067 + ... + 25703.

It is an arithmetic number, because the mean of its divisors is an integer number (6924933).

Almost surely, 2^86869745 is an apocalyptic number.

86869745 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

86869745 is a deficient number, since it is larger than the sum of its proper divisors (23929183).

86869745 is a wasteful number, since it uses less digits than its factorization.

86869745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940.

The product of its digits is 2903040, while the sum is 53.

The square root of 86869745 is about 9320.3940367347. The cubic root of 86869745 is about 442.8835152770.

The spelling of 86869745 in words is "eighty-six million, eight hundred sixty-nine thousand, seven hundred forty-five".