90630198 has 16 divisors (see below), whose sum is σ = 201400560. Its totient is φ = 30210048.

The previous prime is 90630193. The next prime is 90630203. The reversal of 90630198 is 89103609.

90630198 is a `hidden beast` number, since 9 + 0 + 630 + 19 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (90630193) and next prime (90630203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90630193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839115 + ... + 839222.

It is an arithmetic number, because the mean of its divisors is an integer number (12587535).

Almost surely, 2^90630198 is an apocalyptic number.

90630198 is an abundant number, since it is smaller than the sum of its proper divisors (110770362).

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

90630198 is a wasteful number, since it uses less digits than its factorization.

90630198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678348 (or 1678342 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 90630198 is about 9519.9893907504. The cubic root of 90630198 is about 449.1840324430.

The spelling of 90630198 in words is "ninety million, six hundred thirty thousand, one hundred ninety-eight".