86700631 has 2 divisors, whose sum is σ = 86700632. Its totient is φ = 86700630.

The previous prime is 86700617. The next prime is 86700659. The reversal of 86700631 is 13600768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86700631 - 2¹¹ = 86698583 is a prime.

It is a super-2 number, since 2×86700631² = 15033998831596322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86700593 and 86700602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86700331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43350315 + 43350316.

It is an arithmetic number, because the mean of its divisors is an integer number (43350316).

Almost surely, 2^86700631 is an apocalyptic number.

86700631 is a deficient number, since it is larger than the sum of its proper divisors (1).

86700631 is an equidigital number, since it uses as much as digits as its factorization.

86700631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 86700631 is about 9311.3173611471. The cubic root of 86700631 is about 442.5959335343.

The spelling of 86700631 in words is "eighty-six million, seven hundred thousand, six hundred thirty-one".