91424697 has 16 divisors (see below), whose sum is σ = 150030720. Its totient is φ = 48223872.

The previous prime is 91424687. The next prime is 91424699. The reversal of 91424697 is 79642419.

It is not a de Polignac number, because 91424697 - 2⁷ = 91424569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91424699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167172 + ... + 167717.

It is an arithmetic number, because the mean of its divisors is an integer number (9376920).

Almost surely, 2^91424697 is an apocalyptic number.

It is an amenable number.

91424697 is a deficient number, since it is larger than the sum of its proper divisors (58606023).

91424697 is a wasteful number, since it uses less digits than its factorization.

91424697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334912.

The product of its digits is 108864, while the sum is 42.

The square root of 91424697 is about 9561.6262738093. The cubic root of 91424697 is about 450.4927885524.

The spelling of 91424697 in words is "ninety-one million, four hundred twenty-four thousand, six hundred ninety-seven".