91629717 has 8 divisors (see below), whose sum is σ = 122232480. Its totient is φ = 61056720.

The previous prime is 91629709. The next prime is 91629719. The reversal of 91629717 is 71792619.

It is a happy number.

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

It is not a de Polignac number, because 91629717 - 2³ = 91629709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91629719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167 + ... + 13587.

It is an arithmetic number, because the mean of its divisors is an integer number (15279060).

Almost surely, 2^91629717 is an apocalyptic number.

It is an amenable number.

91629717 is a deficient number, since it is larger than the sum of its proper divisors (30602763).

91629717 is a wasteful number, since it uses less digits than its factorization.

91629717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14883.

The product of its digits is 47628, while the sum is 42.

The square root of 91629717 is about 9572.3412496630. The cubic root of 91629717 is about 450.8292807011.

The spelling of 91629717 in words is "ninety-one million, six hundred twenty-nine thousand, seven hundred seventeen".