616687 has 4 divisors (see below), whose sum is σ = 629856. Its totient is φ = 603520.

The previous prime is 616673. The next prime is 616703. The reversal of 616687 is 786616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 616687 - 2¹¹ = 614639 is a prime.

It is a Duffinian number.

616687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6514 + ... + 6607.

It is an arithmetic number, because the mean of its divisors is an integer number (157464).

2⁶¹⁶⁶⁸⁷ is an apocalyptic number.

616687 is a deficient number, since it is larger than the sum of its proper divisors (13169).

616687 is a wasteful number, since it uses less digits than its factorization.

616687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13168.

The product of its digits is 12096, while the sum is 34.

The square root of 616687 is about 785.2942123816. The cubic root of 616687 is about 85.1180367025.

The spelling of 616687 in words is "six hundred sixteen thousand, six hundred eighty-seven".