74220911 has 2 divisors, whose sum is σ = 74220912. Its totient is φ = 74220910.

The previous prime is 74220907. The next prime is 74220917. The reversal of 74220911 is 11902247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74220911 - 2² = 74220907 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74220917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37110455 + 37110456.

It is an arithmetic number, because the mean of its divisors is an integer number (37110456).

Almost surely, 2^74220911 is an apocalyptic number.

74220911 is a deficient number, since it is larger than the sum of its proper divisors (1).

74220911 is an equidigital number, since it uses as much as digits as its factorization.

74220911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 74220911 is about 8615.1558894776. The cubic root of 74220911 is about 420.2510045353.

The spelling of 74220911 in words is "seventy-four million, two hundred twenty thousand, nine hundred eleven".