7143965 has 4 divisors (see below), whose sum is σ = 8572764. Its totient is φ = 5715168.

The previous prime is 7143959. The next prime is 7143967. The reversal of 7143965 is 5693417.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3853369 + 3290596 = 1963^2 + 1814^2 .

It is a cyclic number.

It is not a de Polignac number, because 7143965 - 2⁸ = 7143709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7143967) 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, 714392 + ... + 714401.

It is an arithmetic number, because the mean of its divisors is an integer number (2143191).

Almost surely, 2^7143965 is an apocalyptic number.

It is an amenable number.

7143965 is a deficient number, since it is larger than the sum of its proper divisors (1428799).

7143965 is a wasteful number, since it uses less digits than its factorization.

7143965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428798.

The product of its digits is 22680, while the sum is 35.

The square root of 7143965 is about 2672.8196721814. The cubic root of 7143965 is about 192.5956347203.

It can be divided in two parts, 714 and 3965, that multiplied together give a triangular number (2831010 = T₂₃₇₉).

The spelling of 7143965 in words is "seven million, one hundred forty-three thousand, nine hundred sixty-five".