74720843 has 2 divisors, whose sum is σ = 74720844. Its totient is φ = 74720842.

The previous prime is 74720837. The next prime is 74720903. The reversal of 74720843 is 34802747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74720843 - 2⁴ = 74720827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (74720803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37360421 + 37360422.

It is an arithmetic number, because the mean of its divisors is an integer number (37360422).

Almost surely, 2^74720843 is an apocalyptic number.

74720843 is a deficient number, since it is larger than the sum of its proper divisors (1).

74720843 is an equidigital number, since it uses as much as digits as its factorization.

74720843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 74720843 is about 8644.1218755869. The cubic root of 74720843 is about 421.1924596274.

The spelling of 74720843 in words is "seventy-four million, seven hundred twenty thousand, eight hundred forty-three".