86773913 has 2 divisors, whose sum is σ = 86773914. Its totient is φ = 86773912.

The previous prime is 86773909. The next prime is 86773979. The reversal of 86773913 is 31937768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86620249 + 153664 = 9307^2 + 392^2 .

It is a cyclic number.

It is not a de Polignac number, because 86773913 - 2² = 86773909 is a prime.

It is not a weakly prime, because it can be changed into another prime (86776913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43386956 + 43386957.

It is an arithmetic number, because the mean of its divisors is an integer number (43386957).

Almost surely, 2^86773913 is an apocalyptic number.

It is an amenable number.

86773913 is a deficient number, since it is larger than the sum of its proper divisors (1).

86773913 is an equidigital number, since it uses as much as digits as its factorization.

86773913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 86773913 is about 9315.2516337456. The cubic root of 86773913 is about 442.7205969151.

The spelling of 86773913 in words is "eighty-six million, seven hundred seventy-three thousand, nine hundred thirteen".