617671965 has 16 divisors (see below), whose sum is σ = 1046409408. Its totient is φ = 310046976.

The previous prime is 617671949. The next prime is 617671981. The reversal of 617671965 is 569176716.

617671965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (617671949) and next prime (617671981).

It is not a de Polignac number, because 617671965 - 2⁴ = 617671949 is a prime.

It is a super-2 number, since 2×617671965² = 763037312693922450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210867 + ... + 1211376.

It is an arithmetic number, because the mean of its divisors is an integer number (65400588).

Almost surely, 2^617671965 is an apocalyptic number.

It is an amenable number.

617671965 is a deficient number, since it is larger than the sum of its proper divisors (428737443).

617671965 is a wasteful number, since it uses less digits than its factorization.

617671965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422268.

The product of its digits is 476280, while the sum is 48.

The square root of 617671965 is about 24853.0071621122. The cubic root of 617671965 is about 851.6332909631.

The spelling of 617671965 in words is "six hundred seventeen million, six hundred seventy-one thousand, nine hundred sixty-five".