91464641 has 8 divisors (see below), whose sum is σ = 97544160. Its totient is φ = 85462848.

The previous prime is 91464623. The next prime is 91464647. The reversal of 91464641 is 14646419.

It is a happy number.

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 91464641 - 2⁶ = 91464577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91464647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16991 + ... + 21716.

It is an arithmetic number, because the mean of its divisors is an integer number (12193020).

Almost surely, 2^91464641 is an apocalyptic number.

It is an amenable number.

91464641 is a deficient number, since it is larger than the sum of its proper divisors (6079519).

91464641 is a wasteful number, since it uses less digits than its factorization.

91464641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38863.

The product of its digits is 20736, while the sum is 35.

The square root of 91464641 is about 9563.7148117246. The cubic root of 91464641 is about 450.5583866695.

The spelling of 91464641 in words is "ninety-one million, four hundred sixty-four thousand, six hundred forty-one".