618901620 has 24 divisors (see below), whose sum is σ = 1732924704. Its totient is φ = 165040416.

The previous prime is 618901603. The next prime is 618901637. The reversal of 618901620 is 26109816.

It is an interprime number because it is at equal distance from previous prime (618901603) and next prime (618901637).

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, 5157454 + ... + 5157573.

It is an arithmetic number, because the mean of its divisors is an integer number (72205196).

Almost surely, 2^618901620 is an apocalyptic number.

618901620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

618901620 is an abundant number, since it is smaller than the sum of its proper divisors (1114023084).

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

618901620 is a wasteful number, since it uses less digits than its factorization.

618901620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10315039 (or 10315037 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 618901620 is about 24877.7334176568. The cubic root of 618901620 is about 852.1980572862.

The spelling of 618901620 in words is "six hundred eighteen million, nine hundred one thousand, six hundred twenty".