616044290 has 16 divisors (see below), whose sum is σ = 1109197368. Its totient is φ = 246347136.

The previous prime is 616044287. The next prime is 616044323. The reversal of 616044290 is 92440616.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 525280561 + 90763729 = 22919^2 + 9527^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41504 + ... + 54356.

Almost surely, 2^616044290 is an apocalyptic number.

616044290 is a deficient number, since it is larger than the sum of its proper divisors (493153078).

616044290 is a wasteful number, since it uses less digits than its factorization.

616044290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17653.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 616044290 is about 24820.2395234212. The cubic root of 616044290 is about 850.8845647281.

The spelling of 616044290 in words is "six hundred sixteen million, forty-four thousand, two hundred ninety".