91646651 has 8 divisors (see below), whose sum is σ = 95744160. Its totient is φ = 87558592.

The previous prime is 91646563. The next prime is 91646657. The reversal of 91646651 is 15664619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91646651 - 2¹⁰ = 91645627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91646657) 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 7 ways as a sum of consecutive naturals, for example, 23711 + ... + 27303.

It is an arithmetic number, because the mean of its divisors is an integer number (11968020).

Almost surely, 2^91646651 is an apocalyptic number.

91646651 is a deficient number, since it is larger than the sum of its proper divisors (4097509).

91646651 is a wasteful number, since it uses less digits than its factorization.

91646651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725.

The product of its digits is 38880, while the sum is 38.

The square root of 91646651 is about 9573.2257363963. The cubic root of 91646651 is about 450.8570514326.

The spelling of 91646651 in words is "ninety-one million, six hundred forty-six thousand, six hundred fifty-one".