616561433 has 8 divisors (see below), whose sum is σ = 625514400. Its totient is φ = 607644928.

The previous prime is 616561427. The next prime is 616561459. The reversal of 616561433 is 334165616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 616561433 - 2⁸ = 616561177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616561393 and 616561402.

It is not an unprimeable number, because it can be changed into a prime (616561493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25913 + ... + 43641.

It is an arithmetic number, because the mean of its divisors is an integer number (78189300).

Almost surely, 2^616561433 is an apocalyptic number.

It is an amenable number.

616561433 is a deficient number, since it is larger than the sum of its proper divisors (8952967).

616561433 is a wasteful number, since it uses less digits than its factorization.

616561433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18231.

The product of its digits is 38880, while the sum is 35.

The square root of 616561433 is about 24830.6551061385. The cubic root of 616561433 is about 851.1225919460.

The spelling of 616561433 in words is "six hundred sixteen million, five hundred sixty-one thousand, four hundred thirty-three".