86690311 has 2 divisors, whose sum is σ = 86690312. Its totient is φ = 86690310.

The previous prime is 86690299. The next prime is 86690341. The reversal of 86690311 is 11309668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86690311 - 2¹³ = 86682119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86690341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43345155 + 43345156.

It is an arithmetic number, because the mean of its divisors is an integer number (43345156).

Almost surely, 2^86690311 is an apocalyptic number.

86690311 is a deficient number, since it is larger than the sum of its proper divisors (1).

86690311 is an equidigital number, since it uses as much as digits as its factorization.

86690311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 86690311 is about 9310.7631803199. The cubic root of 86690311 is about 442.5783720655.

Adding to 86690311 its reverse (11309668), we get a palindrome (97999979).

The spelling of 86690311 in words is "eighty-six million, six hundred ninety thousand, three hundred eleven".