86402681 has 2 divisors, whose sum is σ = 86402682. Its totient is φ = 86402680.

The previous prime is 86402677. The next prime is 86402741. The reversal of 86402681 is 18620468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74978281 + 11424400 = 8659^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 86402681 - 2² = 86402677 is a prime.

It is a super-2 number, since 2×86402681² = 14930846567975522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86405681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43201340 + 43201341.

It is an arithmetic number, because the mean of its divisors is an integer number (43201341).

Almost surely, 2^86402681 is an apocalyptic number.

It is an amenable number.

86402681 is a deficient number, since it is larger than the sum of its proper divisors (1).

86402681 is an equidigital number, since it uses as much as digits as its factorization.

86402681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 86402681 is about 9295.3042446173. The cubic root of 86402681 is about 442.0883524231.

The spelling of 86402681 in words is "eighty-six million, four hundred two thousand, six hundred eighty-one".