612198090 has 96 divisors (see below), whose sum is σ = 1822818816. Its totient is φ = 139645440.

The previous prime is 612198089. The next prime is 612198131. The reversal of 612198090 is 90891216.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 554479 + ... + 555581.

It is an arithmetic number, because the mean of its divisors is an integer number (18987696).

Almost surely, 2^612198090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612198090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911409408).

612198090 is an abundant number, since it is smaller than the sum of its proper divisors (1210620726).

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

612198090 is a wasteful number, since it uses less digits than its factorization.

612198090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 2001 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 612198090 is about 24742.6370866163. The cubic root of 612198090 is about 849.1100674306.

The spelling of 612198090 in words is "six hundred twelve million, one hundred ninety-eight thousand, ninety".