618746704 has 40 divisors (see below), whose sum is σ = 1274987840. Its totient is φ = 290055168.

The previous prime is 618746699. The next prime is 618746707. The reversal of 618746704 is 407647816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618746707) 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, 18997 + ... + 39979.

It is an arithmetic number, because the mean of its divisors is an integer number (31874696).

Almost surely, 2^618746704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618746704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637493920).

618746704 is an abundant number, since it is smaller than the sum of its proper divisors (656241136).

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

618746704 is a wasteful number, since it uses less digits than its factorization.

618746704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21107 (or 21101 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 618746704 is about 24874.6196754845. The cubic root of 618746704 is about 852.1269473679.

The spelling of 618746704 in words is "six hundred eighteen million, seven hundred forty-six thousand, seven hundred four".