73622947 has 4 divisors (see below), whose sum is σ = 73754280. Its totient is φ = 73491616.

The previous prime is 73622897. The next prime is 73622951. The reversal of 73622947 is 74922637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74922637 = 1051 ⋅71287.

It is a cyclic number.

It is not a de Polignac number, because 73622947 - 2⁷ = 73622819 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73622957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64822 + ... + 65947.

It is an arithmetic number, because the mean of its divisors is an integer number (18438570).

Almost surely, 2^73622947 is an apocalyptic number.

73622947 is a deficient number, since it is larger than the sum of its proper divisors (131333).

73622947 is a wasteful number, since it uses less digits than its factorization.

73622947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131332.

The product of its digits is 127008, while the sum is 40.

The square root of 73622947 is about 8580.3815183242. The cubic root of 73622947 is about 419.1193698811.

The spelling of 73622947 in words is "seventy-three million, six hundred twenty-two thousand, nine hundred forty-seven".