618402620 has 24 divisors (see below), whose sum is σ = 1416704688. Its totient is φ = 224873600.

The previous prime is 618402619. The next prime is 618402643. The reversal of 618402620 is 26204816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405241 + ... + 1405680.

It is an arithmetic number, because the mean of its divisors is an integer number (59029362).

Almost surely, 2^618402620 is an apocalyptic number.

It is an amenable number.

618402620 is an abundant number, since it is smaller than the sum of its proper divisors (798302068).

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

618402620 is a wasteful number, since it uses less digits than its factorization.

618402620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810941 (or 2810939 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 618402620 is about 24867.7023466182. The cubic root of 618402620 is about 851.9689626258.

The spelling of 618402620 in words is "six hundred eighteen million, four hundred two thousand, six hundred twenty".