73644356 has 12 divisors (see below), whose sum is σ = 132361068. Its totient is φ = 35826912.

The previous prime is 73644349. The next prime is 73644377. The reversal of 73644356 is 65344637.

It can be written as a sum of positive squares in 2 ways, for example, as 35402500 + 38241856 = 5950^2 + 6184^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248651 + ... + 248946.

It is an arithmetic number, because the mean of its divisors is an integer number (11030089).

Almost surely, 2^73644356 is an apocalyptic number.

It is an amenable number.

73644356 is a deficient number, since it is larger than the sum of its proper divisors (58716712).

73644356 is a wasteful number, since it uses less digits than its factorization.

73644356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497638 (or 497636 counting only the distinct ones).

The product of its digits is 181440, while the sum is 38.

The square root of 73644356 is about 8581.6289828913. The cubic root of 73644356 is about 419.1599915321.

The spelling of 73644356 in words is "seventy-three million, six hundred forty-four thousand, three hundred fifty-six".