87105793 has 2 divisors, whose sum is σ = 87105794. Its totient is φ = 87105792.

The previous prime is 87105757. The next prime is 87105797. The reversal of 87105793 is 39750178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71368704 + 15737089 = 8448^2 + 3967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87105793 is a prime.

It is not a weakly prime, because it can be changed into another prime (87105797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43552896 + 43552897.

It is an arithmetic number, because the mean of its divisors is an integer number (43552897).

Almost surely, 2^87105793 is an apocalyptic number.

It is an amenable number.

87105793 is a deficient number, since it is larger than the sum of its proper divisors (1).

87105793 is an equidigital number, since it uses as much as digits as its factorization.

87105793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 87105793 is about 9333.0484301754. The cubic root of 87105793 is about 443.2842962452.

The spelling of 87105793 in words is "eighty-seven million, one hundred five thousand, seven hundred ninety-three".