616931 has 8 divisors (see below), whose sum is σ = 728064. Its totient is φ = 511560.

The previous prime is 616909. The next prime is 616933. The reversal of 616931 is 139616.

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

It is not a de Polignac number, because 616931 - 2¹⁰ = 615907 is a prime.

It is a super-2 number, since 2×616931² = 761207717522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616931.

It is not an unprimeable number, because it can be changed into a prime (616933) 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, 1205 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (91008).

2⁶¹⁶⁹³¹ is an apocalyptic number.

616931 is a deficient number, since it is larger than the sum of its proper divisors (111133).

616931 is a wasteful number, since it uses less digits than its factorization.

616931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881.

The product of its digits is 972, while the sum is 26.

The square root of 616931 is about 785.4495528040. The cubic root of 616931 is about 85.1292612310.

The spelling of 616931 in words is "six hundred sixteen thousand, nine hundred thirty-one".