69685379 has 4 divisors (see below), whose sum is σ = 69859560. Its totient is φ = 69511200.

The previous prime is 69685367. The next prime is 69685403. The reversal of 69685379 is 97358696.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69685379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69685379.

It is not an unprimeable number, because it can be changed into a prime (69685339) 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, 86489 + ... + 87290.

It is an arithmetic number, because the mean of its divisors is an integer number (17464890).

Almost surely, 2^69685379 is an apocalyptic number.

69685379 is a deficient number, since it is larger than the sum of its proper divisors (174181).

69685379 is a wasteful number, since it uses less digits than its factorization.

69685379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174180.

The product of its digits is 2449440, while the sum is 53.

The square root of 69685379 is about 8347.7768896875. The cubic root of 69685379 is about 411.5101536038.

The spelling of 69685379 in words is "sixty-nine million, six hundred eighty-five thousand, three hundred seventy-nine".