73323991 has 8 divisors (see below), whose sum is σ = 79367904. Its totient is φ = 67337760.

The previous prime is 73323989. The next prime is 73324019. The reversal of 73323991 is 19932337.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73323991 - 2¹ = 73323989 is a prime.

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 73323991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73323391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11755 + ... + 16876.

It is an arithmetic number, because the mean of its divisors is an integer number (9920988).

Almost surely, 2^73323991 is an apocalyptic number.

73323991 is a deficient number, since it is larger than the sum of its proper divisors (6043913).

73323991 is a wasteful number, since it uses less digits than its factorization.

73323991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28841.

The product of its digits is 30618, while the sum is 37.

The square root of 73323991 is about 8562.9428936552. The cubic root of 73323991 is about 418.5513031938.

The spelling of 73323991 in words is "seventy-three million, three hundred twenty-three thousand, nine hundred ninety-one".