73668247 has 2 divisors, whose sum is σ = 73668248. Its totient is φ = 73668246.

The previous prime is 73668239. The next prime is 73668271. The reversal of 73668247 is 74286637.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73668247 - 2³ = 73668239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73668047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36834123 + 36834124.

It is an arithmetic number, because the mean of its divisors is an integer number (36834124).

Almost surely, 2^73668247 is an apocalyptic number.

73668247 is a deficient number, since it is larger than the sum of its proper divisors (1).

73668247 is an equidigital number, since it uses as much as digits as its factorization.

73668247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 43.

The square root of 73668247 is about 8583.0208551535. The cubic root of 73668247 is about 419.2053132612.

The spelling of 73668247 in words is "seventy-three million, six hundred sixty-eight thousand, two hundred forty-seven".