86700973 has 2 divisors, whose sum is σ = 86700974. Its totient is φ = 86700972.

The previous prime is 86700959. The next prime is 86700979. The reversal of 86700973 is 37900768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57562569 + 29138404 = 7587^2 + 5398^2 .

It is a cyclic number.

It is not a de Polignac number, because 86700973 - 2⁵ = 86700941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86700979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43350486 + 43350487.

It is an arithmetic number, because the mean of its divisors is an integer number (43350487).

Almost surely, 2^86700973 is an apocalyptic number.

It is an amenable number.

86700973 is a deficient number, since it is larger than the sum of its proper divisors (1).

86700973 is an equidigital number, since it uses as much as digits as its factorization.

86700973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 86700973 is about 9311.3357258774. The cubic root of 86700973 is about 442.5965154894.

The spelling of 86700973 in words is "eighty-six million, seven hundred thousand, nine hundred seventy-three".