91075374 has 32 divisors (see below), whose sum is σ = 217959840. Its totient is φ = 28022976.

The previous prime is 91075363. The next prime is 91075393. The reversal of 91075374 is 47357019.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64167 + ... + 65570.

It is an arithmetic number, because the mean of its divisors is an integer number (6811245).

Almost surely, 2^91075374 is an apocalyptic number.

91075374 is an abundant number, since it is smaller than the sum of its proper divisors (126884466).

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

91075374 is a wasteful number, since it uses less digits than its factorization.

91075374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129761 (or 129755 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 91075374 is about 9543.3418675011. The cubic root of 91075374 is about 449.9182962776.

The spelling of 91075374 in words is "ninety-one million, seventy-five thousand, three hundred seventy-four".