73221682 has 4 divisors (see below), whose sum is σ = 109832526. Its totient is φ = 36610840.

The previous prime is 73221679. The next prime is 73221689. The reversal of 73221682 is 28612237.

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

It can be written as a sum of positive squares in only one way, i.e., 61449921 + 11771761 = 7839^2 + 3431^2 .

It is a super-2 number, since 2×73221682² = 10722829429818248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (73221689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18305419 + ... + 18305422.

Almost surely, 2^73221682 is an apocalyptic number.

73221682 is a deficient number, since it is larger than the sum of its proper divisors (36610844).

73221682 is a wasteful number, since it uses less digits than its factorization.

73221682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36610843.

The product of its digits is 8064, while the sum is 31.

The square root of 73221682 is about 8556.9668691657. The cubic root of 73221682 is about 418.3565443049.

The spelling of 73221682 in words is "seventy-three million, two hundred twenty-one thousand, six hundred eighty-two".