69968535 has 48 divisors (see below), whose sum is σ = 138576384. Its totient is φ = 29517696.

The previous prime is 69968501. The next prime is 69968537. The reversal of 69968535 is 53586996.

69968535 is a nontrivial binomial coefficient, being equal to C(11830, 2).

It is not a de Polignac number, because 69968535 - 2⁷ = 69968407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69968537) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 15774 + ... + 19716.

It is an arithmetic number, because the mean of its divisors is an integer number (2887008).

Almost surely, 2^69968535 is an apocalyptic number.

69968535 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

69968535 is the 11829-th triangular number and also the 5915-th hexagonal number.

69968535 is a deficient number, since it is larger than the sum of its proper divisors (68607849).

69968535 is a wasteful number, since it uses less digits than its factorization.

69968535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984 (or 3971 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 51.

The square root of 69968535 is about 8364.7196605744. The cubic root of 69968535 is about 412.0667701348.

The spelling of 69968535 in words is "sixty-nine million, nine hundred sixty-eight thousand, five hundred thirty-five".