86137945 has 4 divisors (see below), whose sum is σ = 103365540. Its totient is φ = 68910352.

The previous prime is 86137907. The next prime is 86137949. The reversal of 86137945 is 54973168.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10291264 + 75846681 = 3208^2 + 8709^2 .

It is a cyclic number.

It is not a de Polignac number, because 86137945 - 2¹³ = 86129753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86137949) 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, 8613790 + ... + 8613799.

It is an arithmetic number, because the mean of its divisors is an integer number (25841385).

Almost surely, 2^86137945 is an apocalyptic number.

It is an amenable number.

86137945 is a deficient number, since it is larger than the sum of its proper divisors (17227595).

86137945 is a wasteful number, since it uses less digits than its factorization.

86137945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17227594.

The product of its digits is 181440, while the sum is 43.

The square root of 86137945 is about 9281.0530113775. The cubic root of 86137945 is about 441.6363740151.

The spelling of 86137945 in words is "eighty-six million, one hundred thirty-seven thousand, nine hundred forty-five".