618772212 has 72 divisors (see below), whose sum is σ = 1587025440. Its totient is φ = 203261760.

The previous prime is 618772207. The next prime is 618772223. The reversal of 618772212 is 212277816.

618772212 is a `hidden beast` number, since 618 + 7 + 7 + 22 + 12 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 843798 + ... + 844530.

It is an arithmetic number, because the mean of its divisors is an integer number (22042020).

Almost surely, 2^618772212 is an apocalyptic number.

It is an amenable number.

618772212 is an abundant number, since it is smaller than the sum of its proper divisors (968253228).

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

618772212 is a wasteful number, since it uses less digits than its factorization.

618772212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1048 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 618772212 is about 24875.1324016577. The cubic root of 618772212 is about 852.1386569282.

The spelling of 618772212 in words is "six hundred eighteen million, seven hundred seventy-two thousand, two hundred twelve".