73648723 has 4 divisors (see below), whose sum is σ = 75361528. Its totient is φ = 71935920.

The previous prime is 73648721. The next prime is 73648727. The reversal of 73648723 is 32784637.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73648723 - 2¹ = 73648721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73648721) 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, 856338 + ... + 856423.

It is an arithmetic number, because the mean of its divisors is an integer number (18840382).

Almost surely, 2^73648723 is an apocalyptic number.

73648723 is a deficient number, since it is larger than the sum of its proper divisors (1712805).

73648723 is a wasteful number, since it uses less digits than its factorization.

73648723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712804.

The product of its digits is 169344, while the sum is 40.

The square root of 73648723 is about 8581.8834179916. The cubic root of 73648723 is about 419.1682765549.

The spelling of 73648723 in words is "seventy-three million, six hundred forty-eight thousand, seven hundred twenty-three".