90691374 has 24 divisors (see below), whose sum is σ = 184903992. Its totient is φ = 29654560.

The previous prime is 90691373. The next prime is 90691453. The reversal of 90691374 is 47319609.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90691373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14164 + ... + 19544.

It is an arithmetic number, because the mean of its divisors is an integer number (7704333).

Almost surely, 2^90691374 is an apocalyptic number.

90691374 is an abundant number, since it is smaller than the sum of its proper divisors (94212618).

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

90691374 is a wasteful number, since it uses less digits than its factorization.

90691374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5492 (or 5439 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 90691374 is about 9523.2018775200. The cubic root of 90691374 is about 449.2850771367.

The spelling of 90691374 in words is "ninety million, six hundred ninety-one thousand, three hundred seventy-four".