616331 has 8 divisors (see below), whose sum is σ = 651264. Its totient is φ = 582120.

The previous prime is 616327. The next prime is 616361. The reversal of 616331 is 133616.

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 616331 - 2² = 616327 is a prime.

It is a super-2 number, since 2×616331² = 759727803122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616321) by changing a digit.

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, 2816 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (81408).

2⁶¹⁶³³¹ is an apocalyptic number.

616331 is a deficient number, since it is larger than the sum of its proper divisors (34933).

616331 is a wasteful number, since it uses less digits than its factorization.

616331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

The product of its digits is 324, while the sum is 20.

The square root of 616331 is about 785.0675130204. The cubic root of 616331 is about 85.1016546190.

Adding to 616331 its reverse (133616), we get a palindrome (749947).

The spelling of 616331 in words is "six hundred sixteen thousand, three hundred thirty-one".