90798574 has 4 divisors (see below), whose sum is σ = 136197864. Its totient is φ = 45399286.

The previous prime is 90798541. The next prime is 90798577. The reversal of 90798574 is 47589709.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47589709 = 47 ⋅1012547.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90798577) 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 as a sum of consecutive naturals, namely, 22699642 + ... + 22699645.

It is an arithmetic number, because the mean of its divisors is an integer number (34049466).

Almost surely, 2^90798574 is an apocalyptic number.

90798574 is a deficient number, since it is larger than the sum of its proper divisors (45399290).

90798574 is a wasteful number, since it uses less digits than its factorization.

90798574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45399289.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 90798574 is about 9528.8285743842. The cubic root of 90798574 is about 449.4620303710.

The spelling of 90798574 in words is "ninety million, seven hundred ninety-eight thousand, five hundred seventy-four".