91648858 has 16 divisors (see below), whose sum is σ = 160945344. Its totient is φ = 38319840.

The previous prime is 91648847. The next prime is 91648861. The reversal of 91648858 is 85884619.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79260 + ... + 80407.

It is an arithmetic number, because the mean of its divisors is an integer number (10059084).

Almost surely, 2^91648858 is an apocalyptic number.

91648858 is a deficient number, since it is larger than the sum of its proper divisors (69296486).

91648858 is a wasteful number, since it uses less digits than its factorization.

91648858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159717.

The product of its digits is 552960, while the sum is 49.

The square root of 91648858 is about 9573.3410051037. The cubic root of 91648858 is about 450.8606705266.

The spelling of 91648858 in words is "ninety-one million, six hundred forty-eight thousand, eight hundred fifty-eight".