6989965 has 8 divisors (see below), whose sum is σ = 8420760. Its totient is φ = 5570112.

The previous prime is 6989963. The next prime is 6989987. The reversal of 6989965 is 5699896.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9801 + 6980164 = 99^2 + 2642^2 .

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 6989965 - 2¹ = 6989963 is a prime.

It is a super-2 number, since 2×6989965² = 97719221402450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989963) by changing a digit.

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, 1254 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (1052595).

Almost surely, 2^6989965 is an apocalyptic number.

It is an amenable number.

6989965 is a deficient number, since it is larger than the sum of its proper divisors (1430795).

6989965 is a wasteful number, since it uses less digits than its factorization.

6989965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5471.

The product of its digits is 1049760, while the sum is 52.

The square root of 6989965 is about 2643.8541941643. The cubic root of 6989965 is about 191.2016637782.

The spelling of 6989965 in words is "six million, nine hundred eighty-nine thousand, nine hundred sixty-five".