73013047 has 4 divisors (see below), whose sum is σ = 73416616. Its totient is φ = 72609480.

The previous prime is 73013033. The next prime is 73013051. The reversal of 73013047 is 74031037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74031037 = 503 ⋅147179.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73013047 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 (73013027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201513 + ... + 201874.

It is an arithmetic number, because the mean of its divisors is an integer number (18354154).

Almost surely, 2^73013047 is an apocalyptic number.

73013047 is a deficient number, since it is larger than the sum of its proper divisors (403569).

73013047 is a wasteful number, since it uses less digits than its factorization.

73013047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403568.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 73013047 is about 8544.7672291292. The cubic root of 73013047 is about 417.9588167113.

The spelling of 73013047 in words is "seventy-three million, thirteen thousand, forty-seven".