74229817 has 2 divisors, whose sum is σ = 74229818. Its totient is φ = 74229816.

The previous prime is 74229773. The next prime is 74229829. The reversal of 74229817 is 71892247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72999936 + 1229881 = 8544^2 + 1109^2 .

It is a cyclic number.

It is not a de Polignac number, because 74229817 - 2¹⁵ = 74197049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74229817.

It is not a weakly prime, because it can be changed into another prime (74229017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37114908 + 37114909.

It is an arithmetic number, because the mean of its divisors is an integer number (37114909).

Almost surely, 2^74229817 is an apocalyptic number.

It is an amenable number.

74229817 is a deficient number, since it is larger than the sum of its proper divisors (1).

74229817 is an equidigital number, since it uses as much as digits as its factorization.

74229817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 74229817 is about 8615.6727537668. The cubic root of 74229817 is about 420.2678129419.

The spelling of 74229817 in words is "seventy-four million, two hundred twenty-nine thousand, eight hundred seventeen".