90736191 has 120 divisors (see below), whose sum is σ = 183521520. Its totient is φ = 42674688.

The previous prime is 90736187. The next prime is 90736199. The reversal of 90736191 is 19163709.

It is not a de Polignac number, because 90736191 - 2² = 90736187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90736199) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 4775580 + ... + 4775598.

It is an arithmetic number, because the mean of its divisors is an integer number (1529346).

Almost surely, 2^90736191 is an apocalyptic number.

90736191 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

90736191 is an abundant number, since it is smaller than the sum of its proper divisors (92785329).

90736191 is a wasteful number, since it uses less digits than its factorization.

90736191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 90736191 is about 9525.5546295216. The cubic root of 90736191 is about 449.3590727570.

The spelling of 90736191 in words is "ninety million, seven hundred thirty-six thousand, one hundred ninety-one".