73214639 has 2 divisors, whose sum is σ = 73214640. Its totient is φ = 73214638.

The previous prime is 73214633. The next prime is 73214641. The reversal of 73214639 is 93641237.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73214639 - 2⁴ = 73214623 is a prime.

Together with 73214641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73214599 and 73214608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73214633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36607319 + 36607320.

It is an arithmetic number, because the mean of its divisors is an integer number (36607320).

Almost surely, 2^73214639 is an apocalyptic number.

73214639 is a deficient number, since it is larger than the sum of its proper divisors (1).

73214639 is an equidigital number, since it uses as much as digits as its factorization.

73214639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 73214639 is about 8556.5553232595. Note that the first 3 decimals coincide. The cubic root of 73214639 is about 418.3431303382.

The spelling of 73214639 in words is "seventy-three million, two hundred fourteen thousand, six hundred thirty-nine".