91816677 has 12 divisors (see below), whose sum is σ = 140425740. Its totient is φ = 57610368.

The previous prime is 91816657. The next prime is 91816687. The reversal of 91816677 is 77661819.

It can be written as a sum of positive squares in 2 ways, for example, as 77686596 + 14130081 = 8814^2 + 3759^2 .

It is not a de Polignac number, because 91816677 - 2¹⁹ = 91292389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91816657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299902 + ... + 300207.

It is an arithmetic number, because the mean of its divisors is an integer number (11702145).

Almost surely, 2^91816677 is an apocalyptic number.

It is an amenable number.

91816677 is a deficient number, since it is larger than the sum of its proper divisors (48609063).

91816677 is a wasteful number, since it uses less digits than its factorization.

91816677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600132 (or 600129 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 91816677 is about 9582.1019092890. The cubic root of 91816677 is about 451.1356943260.

The spelling of 91816677 in words is "ninety-one million, eight hundred sixteen thousand, six hundred seventy-seven".