616533642 has 24 divisors (see below), whose sum is σ = 1378915200. Its totient is φ = 198881640.

The previous prime is 616533629. The next prime is 616533647. The reversal of 616533642 is 246335616.

616533642 is a `hidden beast` number, since 6 + 1 + 6 + 5 + 3 + 3 + 642 = 666.

It is a super-2 number, since 2×616533642² = 760227463435568328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 616533597 and 616533606.

It is not an unprimeable number, because it can be changed into a prime (616533647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551892 + ... + 553007.

It is an arithmetic number, because the mean of its divisors is an integer number (57454800).

Almost surely, 2^616533642 is an apocalyptic number.

616533642 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

616533642 is an abundant number, since it is smaller than the sum of its proper divisors (762381558).

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

616533642 is a wasteful number, since it uses less digits than its factorization.

616533642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104938 (or 1104935 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 616533642 is about 24830.0954891438. The cubic root of 616533642 is about 851.1098038700.

The spelling of 616533642 in words is "six hundred sixteen million, five hundred thirty-three thousand, six hundred forty-two".