73077321 has 4 divisors (see below), whose sum is σ = 97436432. Its totient is φ = 48718212.

The previous prime is 73077289. The next prime is 73077353. The reversal of 73077321 is 12377037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (73077289) and next prime (73077353).

It is not a de Polignac number, because 73077321 - 2⁵ = 73077289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73077821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12179551 + ... + 12179556.

It is an arithmetic number, because the mean of its divisors is an integer number (24359108).

Almost surely, 2^73077321 is an apocalyptic number.

It is an amenable number.

73077321 is a deficient number, since it is larger than the sum of its proper divisors (24359111).

73077321 is a wasteful number, since it uses less digits than its factorization.

73077321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24359110.

The product of its (nonzero) digits is 6174, while the sum is 30.

The square root of 73077321 is about 8548.5274170468. The cubic root of 73077321 is about 418.0814249624.

The spelling of 73077321 in words is "seventy-three million, seventy-seven thousand, three hundred twenty-one".