91079658 has 24 divisors (see below), whose sum is σ = 197524548. Its totient is φ = 30331392.

The previous prime is 91079641. The next prime is 91079669. The reversal of 91079658 is 85697019.

91079658 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 2 ways, for example, as 74701449 + 16378209 = 8643^2 + 4047^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27466 + ... + 30602.

Almost surely, 2^91079658 is an apocalyptic number.

91079658 is an abundant number, since it is smaller than the sum of its proper divisors (106444890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91079658 is a wasteful number, since it uses less digits than its factorization.

91079658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4758 (or 4755 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 91079658 is about 9543.5663145388. The cubic root of 91079658 is about 449.9253505802.

The spelling of 91079658 in words is "ninety-one million, seventy-nine thousand, six hundred fifty-eight".