86761973 has 2 divisors, whose sum is σ = 86761974. Its totient is φ = 86761972.

The previous prime is 86761951. The next prime is 86761981. The reversal of 86761973 is 37916768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51739249 + 35022724 = 7193^2 + 5918^2 .

It is a cyclic number.

It is not a de Polignac number, because 86761973 - 2¹⁶ = 86696437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86761903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43380986 + 43380987.

It is an arithmetic number, because the mean of its divisors is an integer number (43380987).

Almost surely, 2^86761973 is an apocalyptic number.

It is an amenable number.

86761973 is a deficient number, since it is larger than the sum of its proper divisors (1).

86761973 is an equidigital number, since it uses as much as digits as its factorization.

86761973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 86761973 is about 9314.6107272392. The cubic root of 86761973 is about 442.7002900194.

The spelling of 86761973 in words is "eighty-six million, seven hundred sixty-one thousand, nine hundred seventy-three".