86751751 has 2 divisors, whose sum is σ = 86751752. Its totient is φ = 86751750.

The previous prime is 86751727. The next prime is 86751767. The reversal of 86751751 is 15715768.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86751751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86751781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43375875 + 43375876.

It is an arithmetic number, because the mean of its divisors is an integer number (43375876).

Almost surely, 2^86751751 is an apocalyptic number.

86751751 is a deficient number, since it is larger than the sum of its proper divisors (1).

86751751 is an equidigital number, since it uses as much as digits as its factorization.

86751751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 40.

The square root of 86751751 is about 9314.0620032293. The cubic root of 86751751 is about 442.6829035234.

The spelling of 86751751 in words is "eighty-six million, seven hundred fifty-one thousand, seven hundred fifty-one".