73147647 has 8 divisors (see below), whose sum is σ = 97777456. Its totient is φ = 48641472.

The previous prime is 73147643. The next prime is 73147673. The reversal of 73147647 is 74674137.

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

It is not a de Polignac number, because 73147647 - 2² = 73147643 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 (73147643) 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, 29518 + ... + 31899.

It is an arithmetic number, because the mean of its divisors is an integer number (12222182).

Almost surely, 2^73147647 is an apocalyptic number.

73147647 is a deficient number, since it is larger than the sum of its proper divisors (24629809).

73147647 is a wasteful number, since it uses less digits than its factorization.

73147647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61817.

The product of its digits is 98784, while the sum is 39.

The square root of 73147647 is about 8552.6397679313. The cubic root of 73147647 is about 418.2154955936.

The spelling of 73147647 in words is "seventy-three million, one hundred forty-seven thousand, six hundred forty-seven".