73321967 has 4 divisors (see below), whose sum is σ = 73475520. Its totient is φ = 73168416.

The previous prime is 73321961. The next prime is 73321979. The reversal of 73321967 is 76912337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76912337 = 43 ⋅1788659.

It is a cyclic number.

It is not a de Polignac number, because 73321967 - 2¹⁸ = 73059823 is a prime.

It is a super-2 number, since 2×73321967² = 10752221689498178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73321967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73321961) 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, 76058 + ... + 77015.

It is an arithmetic number, because the mean of its divisors is an integer number (18368880).

Almost surely, 2^73321967 is an apocalyptic number.

73321967 is a deficient number, since it is larger than the sum of its proper divisors (153553).

73321967 is a wasteful number, since it uses less digits than its factorization.

73321967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153552.

The product of its digits is 47628, while the sum is 38.

The square root of 73321967 is about 8562.8247091716. The cubic root of 73321967 is about 418.5474519957.

The spelling of 73321967 in words is "seventy-three million, three hundred twenty-one thousand, nine hundred sixty-seven".