618965 has 8 divisors (see below), whose sum is σ = 752640. Its totient is φ = 488592.

The previous prime is 618941. The next prime is 618971. The reversal of 618965 is 569816.

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 618965 - 2¹⁸ = 356821 is a prime.

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

It is a Curzon number.

It is a congruent number.

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, 389 + ... + 1178.

It is an arithmetic number, because the mean of its divisors is an integer number (94080).

2⁶¹⁸⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

618965 is a deficient number, since it is larger than the sum of its proper divisors (133675).

618965 is a wasteful number, since it uses less digits than its factorization.

618965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651.

The product of its digits is 12960, while the sum is 35.

The square root of 618965 is about 786.7432872291. The cubic root of 618965 is about 85.2227146707. Note that the first 3 decimals are identical.

The spelling of 618965 in words is "six hundred eighteen thousand, nine hundred sixty-five".