91634601 has 4 divisors (see below), whose sum is σ = 122179472. Its totient is φ = 61089732.

The previous prime is 91634597. The next prime is 91634617. The reversal of 91634601 is 10643619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91634601 - 2² = 91634597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91634401) 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, 15272431 + ... + 15272436.

It is an arithmetic number, because the mean of its divisors is an integer number (30544868).

Almost surely, 2^91634601 is an apocalyptic number.

It is an amenable number.

91634601 is a deficient number, since it is larger than the sum of its proper divisors (30544871).

91634601 is a wasteful number, since it uses less digits than its factorization.

91634601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30544870.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 91634601 is about 9572.5963562662. The cubic root of 91634601 is about 450.8372905156.

It can be divided in two parts, 91634 and 601, that added together give a triangular number (92235 = T₄₂₉).

The spelling of 91634601 in words is "ninety-one million, six hundred thirty-four thousand, six hundred one".