69984965 has 4 divisors (see below), whose sum is σ = 83981964. Its totient is φ = 55987968.

The previous prime is 69984953. The next prime is 69984973. The reversal of 69984965 is 56948996.

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 51854401 + 18130564 = 7201^2 + 4258^2 .

It is a cyclic number.

It is not a de Polignac number, because 69984965 - 2⁸ = 69984709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 69984965.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6998492 + ... + 6998501.

It is an arithmetic number, because the mean of its divisors is an integer number (20995491).

Almost surely, 2^69984965 is an apocalyptic number.

It is an amenable number.

69984965 is a deficient number, since it is larger than the sum of its proper divisors (13996999).

69984965 is a wasteful number, since it uses less digits than its factorization.

69984965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13996998.

The product of its digits is 4199040, while the sum is 56.

The square root of 69984965 is about 8365.7017039816. The cubic root of 69984965 is about 412.0990214279.

The spelling of 69984965 in words is "sixty-nine million, nine hundred eighty-four thousand, nine hundred sixty-five".