74784091 has 2 divisors, whose sum is σ = 74784092. Its totient is φ = 74784090.

The previous prime is 74784049. The next prime is 74784107. The reversal of 74784091 is 19048747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74784091 - 2¹⁹ = 74259803 is a prime.

It is not a weakly prime, because it can be changed into another prime (74782091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37392045 + 37392046.

It is an arithmetic number, because the mean of its divisors is an integer number (37392046).

Almost surely, 2^74784091 is an apocalyptic number.

74784091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74784091 is an equidigital number, since it uses as much as digits as its factorization.

74784091 is an odious number, because the sum of its binary digits is odd.

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

The square root of 74784091 is about 8647.7795415933. The cubic root of 74784091 is about 421.3112665837.

The spelling of 74784091 in words is "seventy-four million, seven hundred eighty-four thousand, ninety-one".