86974751 has 2 divisors, whose sum is σ = 86974752. Its totient is φ = 86974750.

The previous prime is 86974739. The next prime is 86974757. The reversal of 86974751 is 15747968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86974751 - 2¹⁸ = 86712607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86974696 and 86974705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86974757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43487375 + 43487376.

It is an arithmetic number, because the mean of its divisors is an integer number (43487376).

Almost surely, 2^86974751 is an apocalyptic number.

86974751 is a deficient number, since it is larger than the sum of its proper divisors (1).

86974751 is an equidigital number, since it uses as much as digits as its factorization.

86974751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 47.

The square root of 86974751 is about 9326.0254664031. The cubic root of 86974751 is about 443.0618923049.

The spelling of 86974751 in words is "eighty-six million, nine hundred seventy-four thousand, seven hundred fifty-one".