86790511 has 2 divisors, whose sum is σ = 86790512. Its totient is φ = 86790510.

The previous prime is 86790449. The next prime is 86790541. The reversal of 86790511 is 11509768.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86790511 - 2⁹ = 86789999 is a prime.

It is a super-2 number, since 2×86790511² = 15065185599282242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86790541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43395255 + 43395256.

It is an arithmetic number, because the mean of its divisors is an integer number (43395256).

Almost surely, 2^86790511 is an apocalyptic number.

86790511 is a deficient number, since it is larger than the sum of its proper divisors (1).

86790511 is an equidigital number, since it uses as much as digits as its factorization.

86790511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 86790511 is about 9316.1424956899. The cubic root of 86790511 is about 442.7488227868.

It can be divided in two parts, 867 and 90511, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 86790511 in words is "eighty-six million, seven hundred ninety thousand, five hundred eleven".