69847421 has 8 divisors (see below), whose sum is σ = 79876800. Its totient is φ = 59830848.

The previous prime is 69847409. The next prime is 69847451. The reversal of 69847421 is 12474896.

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

It is not a de Polignac number, because 69847421 - 2¹⁰ = 69846397 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 (69847451) 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, 17045 + ... + 20741.

It is an arithmetic number, because the mean of its divisors is an integer number (9984600).

Almost surely, 2^69847421 is an apocalyptic number.

It is an amenable number.

69847421 is a deficient number, since it is larger than the sum of its proper divisors (10029379).

69847421 is a wasteful number, since it uses less digits than its factorization.

69847421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6403.

The product of its digits is 96768, while the sum is 41.

The square root of 69847421 is about 8357.4769518079. The cubic root of 69847421 is about 411.8288733025.

The spelling of 69847421 in words is "sixty-nine million, eight hundred forty-seven thousand, four hundred twenty-one".