618700881 has 16 divisors (see below), whose sum is σ = 829587456. Its totient is φ = 410148816.

The previous prime is 618700843. The next prime is 618700889. The reversal of 618700881 is 188007816.

It is not a de Polignac number, because 618700881 - 2²⁵ = 585146449 is a prime.

It is a super-2 number, since 2×618700881² = 765581560300352322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (618700889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531406 + ... + 532568.

It is an arithmetic number, because the mean of its divisors is an integer number (51849216).

Almost surely, 2^618700881 is an apocalyptic number.

It is an amenable number.

618700881 is a deficient number, since it is larger than the sum of its proper divisors (210886575).

618700881 is a wasteful number, since it uses less digits than its factorization.

618700881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012.

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 618700881 is about 24873.6985790212. The cubic root of 618700881 is about 852.1059113086.

The spelling of 618700881 in words is "six hundred eighteen million, seven hundred thousand, eight hundred eighty-one".