616969 has 4 divisors (see below), whose sum is σ = 630144. Its totient is φ = 603796.

The previous prime is 616961. The next prime is 616991. The reversal of 616969 is 969616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616969 - 2³ = 616961 is a prime.

It is a super-2 number, since 2×616969² = 761301493922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616961) 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, 6517 + ... + 6610.

It is an arithmetic number, because the mean of its divisors is an integer number (157536).

2⁶¹⁶⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

616969 is a deficient number, since it is larger than the sum of its proper divisors (13175).

616969 is a wasteful number, since it uses less digits than its factorization.

616969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13174.

The product of its digits is 17496, while the sum is 37.

The square root of 616969 is about 785.4737424001. The cubic root of 616969 is about 85.1310090469.

The spelling of 616969 in words is "six hundred sixteen thousand, nine hundred sixty-nine".