69728071 has 8 divisors (see below), whose sum is σ = 79757984. Its totient is φ = 59715360.

The previous prime is 69728059. The next prime is 69728107. The reversal of 69728071 is 17082796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69728071 - 2¹⁷ = 69596999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69728171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6061 + ... + 13273.

It is an arithmetic number, because the mean of its divisors is an integer number (9969748).

Almost surely, 2^69728071 is an apocalyptic number.

69728071 is a deficient number, since it is larger than the sum of its proper divisors (10029913).

69728071 is a wasteful number, since it uses less digits than its factorization.

69728071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8601.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 69728071 is about 8350.3335861509. Note that the first 3 decimals coincide. The cubic root of 69728071 is about 411.5941722090.

The spelling of 69728071 in words is "sixty-nine million, seven hundred twenty-eight thousand, seventy-one".