77160491 has 2 divisors, whose sum is σ = 77160492. Its totient is φ = 77160490.

The previous prime is 77160449. The next prime is 77160497. The reversal of 77160491 is 19406177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77160491 - 2⁶ = 77160427 is a prime.

It is a super-2 number, since 2×77160491² = 11907482742722162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77160497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38580245 + 38580246.

It is an arithmetic number, because the mean of its divisors is an integer number (38580246).

Almost surely, 2^77160491 is an apocalyptic number.

77160491 is a deficient number, since it is larger than the sum of its proper divisors (1).

77160491 is an equidigital number, since it uses as much as digits as its factorization.

77160491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 77160491 is about 8784.1044506540. The cubic root of 77160491 is about 425.7274572413.

The spelling of 77160491 in words is "seventy-seven million, one hundred sixty thousand, four hundred ninety-one".