91037677 has 4 divisors (see below), whose sum is σ = 91189756. Its totient is φ = 90885600.

The previous prime is 91037651. The next prime is 91037707. The reversal of 91037677 is 77673019.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39614436 + 51423241 = 6294^2 + 7171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91037677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91037627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75138 + ... + 76339.

It is an arithmetic number, because the mean of its divisors is an integer number (22797439).

Almost surely, 2^91037677 is an apocalyptic number.

It is an amenable number.

91037677 is a deficient number, since it is larger than the sum of its proper divisors (152079).

91037677 is a wasteful number, since it uses less digits than its factorization.

91037677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152078.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 91037677 is about 9541.3666211922. The cubic root of 91037677 is about 449.8562124970.

The spelling of 91037677 in words is "ninety-one million, thirty-seven thousand, six hundred seventy-seven".