86992643 has 2 divisors, whose sum is σ = 86992644. Its totient is φ = 86992642.

The previous prime is 86992597. The next prime is 86992657. The reversal of 86992643 is 34629968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86992643 - 2⁸ = 86992387 is a prime.

It is a super-2 number, since 2×86992643² = 15135439872250898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86991643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43496321 + 43496322.

It is an arithmetic number, because the mean of its divisors is an integer number (43496322).

Almost surely, 2^86992643 is an apocalyptic number.

86992643 is a deficient number, since it is larger than the sum of its proper divisors (1).

86992643 is an equidigital number, since it uses as much as digits as its factorization.

86992643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The square root of 86992643 is about 9326.9846681551. The cubic root of 86992643 is about 443.0922716957.

The spelling of 86992643 in words is "eighty-six million, nine hundred ninety-two thousand, six hundred forty-three".