90174813 has 4 divisors (see below), whose sum is σ = 120233088. Its totient is φ = 60116540.

The previous prime is 90174793. The next prime is 90174829. The reversal of 90174813 is 31847109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90174813 - 2⁵ = 90174781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90174853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15029133 + ... + 15029138.

It is an arithmetic number, because the mean of its divisors is an integer number (30058272).

Almost surely, 2^90174813 is an apocalyptic number.

It is an amenable number.

90174813 is a deficient number, since it is larger than the sum of its proper divisors (30058275).

90174813 is a wasteful number, since it uses less digits than its factorization.

90174813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30058274.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 90174813 is about 9496.0419649452. The cubic root of 90174813 is about 448.4304380383.

The spelling of 90174813 in words is "ninety million, one hundred seventy-four thousand, eight hundred thirteen".