69968945 has 4 divisors (see below), whose sum is σ = 83962740. Its totient is φ = 55975152.

The previous prime is 69968933. The next prime is 69969019. The reversal of 69968945 is 54986996.

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 29506624 + 40462321 = 5432^2 + 6361^2 .

It is a cyclic number.

It is not a de Polignac number, because 69968945 - 2⁶ = 69968881 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6996890 + ... + 6996899.

It is an arithmetic number, because the mean of its divisors is an integer number (20990685).

Almost surely, 2^69968945 is an apocalyptic number.

It is an amenable number.

69968945 is a deficient number, since it is larger than the sum of its proper divisors (13993795).

69968945 is a wasteful number, since it uses less digits than its factorization.

69968945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13993794.

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

The square root of 69968945 is about 8364.7441682337. The cubic root of 69968945 is about 412.0675750064.

The spelling of 69968945 in words is "sixty-nine million, nine hundred sixty-eight thousand, nine hundred forty-five".