618066216 has 24 divisors (see below), whose sum is σ = 1673929530. Its totient is φ = 206022048.

The previous prime is 618066209. The next prime is 618066221. The reversal of 618066216 is 612660816.

It can be written as a sum of positive squares in only one way, i.e., 612562500 + 5503716 = 24750^2 + 2346^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4292055 + ... + 4292198.

Almost surely, 2^618066216 is an apocalyptic number.

It is an amenable number.

618066216 is an abundant number, since it is smaller than the sum of its proper divisors (1055863314).

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

618066216 is a wasteful number, since it uses less digits than its factorization.

618066216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584265 (or 8584258 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 618066216 is about 24860.9375527151. The cubic root of 618066216 is about 851.8144474586.

The spelling of 618066216 in words is "six hundred eighteen million, sixty-six thousand, two hundred sixteen".