91677651 has 32 divisors (see below), whose sum is σ = 142067520. Its totient is φ = 52076544.

The previous prime is 91677637. The next prime is 91677661. The reversal of 91677651 is 15677619.

It is not a de Polignac number, because 91677651 - 2⁶ = 91677587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91677661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33835 + ... + 36443.

It is an arithmetic number, because the mean of its divisors is an integer number (4439610).

Almost surely, 2^91677651 is an apocalyptic number.

91677651 is a deficient number, since it is larger than the sum of its proper divisors (50389869).

91677651 is a wasteful number, since it uses less digits than its factorization.

91677651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695.

The product of its digits is 79380, while the sum is 42.

The square root of 91677651 is about 9574.8446984794. The cubic root of 91677651 is about 450.9078806877.

The spelling of 91677651 in words is "ninety-one million, six hundred seventy-seven thousand, six hundred fifty-one".