73721327 has 2 divisors, whose sum is σ = 73721328. Its totient is φ = 73721326.

The previous prime is 73721293. The next prime is 73721339. The reversal of 73721327 is 72312737.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73721327 - 2⁸ = 73721071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73721293 and 73721302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73721377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36860663 + 36860664.

It is an arithmetic number, because the mean of its divisors is an integer number (36860664).

Almost surely, 2^73721327 is an apocalyptic number.

73721327 is a deficient number, since it is larger than the sum of its proper divisors (1).

73721327 is an equidigital number, since it uses as much as digits as its factorization.

73721327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 32.

The square root of 73721327 is about 8586.1124497644. The cubic root of 73721327 is about 419.3059720788.

The spelling of 73721327 in words is "seventy-three million, seven hundred twenty-one thousand, three hundred twenty-seven".