8641965 has 8 divisors (see below), whose sum is σ = 13827168. Its totient is φ = 4609040.

The previous prime is 8641957. The next prime is 8641987. The reversal of 8641965 is 5691468.

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

It is not a de Polignac number, because 8641965 - 2³ = 8641957 is a prime.

It is a super-2 number, since 2×8641965² = 149367118122450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8⁷ + 6 + 4⁶ + 1 + 9⁷ + 6⁸ + 5⁷ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288051 + ... + 288080.

It is an arithmetic number, because the mean of its divisors is an integer number (1728396).

Almost surely, 2^8641965 is an apocalyptic number.

It is an amenable number.

8641965 is a deficient number, since it is larger than the sum of its proper divisors (5185203).

8641965 is a wasteful number, since it uses less digits than its factorization.

8641965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576139.

The product of its digits is 51840, while the sum is 39.

The square root of 8641965 is about 2939.7219256249. The cubic root of 8641965 is about 205.2126684532.

The spelling of 8641965 in words is "eight million, six hundred forty-one thousand, nine hundred sixty-five".