69728668 has 12 divisors (see below), whose sum is σ = 122559640. Its totient is φ = 34711632.

The previous prime is 69728647. The next prime is 69728669. The reversal of 69728668 is 86682796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69728669) 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, 37146 + ... + 38977.

Almost surely, 2^69728668 is an apocalyptic number.

It is an amenable number.

69728668 is a deficient number, since it is larger than the sum of its proper divisors (52830972).

69728668 is a wasteful number, since it uses less digits than its factorization.

69728668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76356 (or 76354 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 69728668 is about 8350.3693331493. The cubic root of 69728668 is about 411.5953468723.

The spelling of 69728668 in words is "sixty-nine million, seven hundred twenty-eight thousand, six hundred sixty-eight".