74624243 has 2 divisors, whose sum is σ = 74624244. Its totient is φ = 74624242.

The previous prime is 74624233. The next prime is 74624257. The reversal of 74624243 is 34242647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74624243 - 2²² = 70429939 is a prime.

It is not a weakly prime, because it can be changed into another prime (74624233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37312121 + 37312122.

It is an arithmetic number, because the mean of its divisors is an integer number (37312122).

Almost surely, 2^74624243 is an apocalyptic number.

74624243 is a deficient number, since it is larger than the sum of its proper divisors (1).

74624243 is an equidigital number, since it uses as much as digits as its factorization.

74624243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 32.

The square root of 74624243 is about 8638.5324563840. The cubic root of 74624243 is about 421.0108738021.

The spelling of 74624243 in words is "seventy-four million, six hundred twenty-four thousand, two hundred forty-three".