69996647 has 24 divisors (see below), whose sum is σ = 84268800. Its totient is φ = 57936816.

The previous prime is 69996643. The next prime is 69996649. The reversal of 69996647 is 74669996.

It is not a de Polignac number, because 69996647 - 2² = 69996643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69996592 and 69996601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69996643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292754 + ... + 292992.

It is an arithmetic number, because the mean of its divisors is an integer number (3511200).

Almost surely, 2^69996647 is an apocalyptic number.

69996647 is a deficient number, since it is larger than the sum of its proper divisors (14272153).

69996647 is a wasteful number, since it uses less digits than its factorization.

69996647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 428 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 56.

The square root of 69996647 is about 8366.3998828648. The cubic root of 69996647 is about 412.1219495569.

The spelling of 69996647 in words is "sixty-nine million, nine hundred ninety-six thousand, six hundred forty-seven".