617779098 has 48 divisors (see below), whose sum is σ = 1384770816. Its totient is φ = 198840960.

The previous prime is 617779087. The next prime is 617779109. The reversal of 617779098 is 890977716.

617779098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (617779087) and next prime (617779109).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329961 + ... + 331827.

It is an arithmetic number, because the mean of its divisors is an integer number (28849392).

Almost surely, 2^617779098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 617779098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692385408).

617779098 is an abundant number, since it is smaller than the sum of its proper divisors (766991718).

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

617779098 is a wasteful number, since it uses less digits than its factorization.

617779098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The square root of 617779098 is about 24855.1624014006. The cubic root of 617779098 is about 851.6825257026.

The spelling of 617779098 in words is "six hundred seventeen million, seven hundred seventy-nine thousand, ninety-eight".