69997447 has 8 divisors (see below), whose sum is σ = 75977216. Its totient is φ = 64102752.

The previous prime is 69997427. The next prime is 69997453. The reversal of 69997447 is 74479996.

It is a happy number.

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 69997447 - 2¹¹ = 69995399 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 (69997427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19548 + ... + 22849.

It is an arithmetic number, because the mean of its divisors is an integer number (9497152).

Almost surely, 2^69997447 is an apocalyptic number.

69997447 is a deficient number, since it is larger than the sum of its proper divisors (5979769).

69997447 is a wasteful number, since it uses less digits than its factorization.

69997447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42537.

The product of its digits is 3429216, while the sum is 55.

The square root of 69997447 is about 8366.4476930176. The cubic root of 69997447 is about 412.1235196145.

The spelling of 69997447 in words is "sixty-nine million, nine hundred ninety-seven thousand, four hundred forty-seven".