74770147 has 2 divisors, whose sum is σ = 74770148. Its totient is φ = 74770146.

The previous prime is 74770141. The next prime is 74770159. The reversal of 74770147 is 74107747.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74770147 is a prime.

It is not a weakly prime, because it can be changed into another prime (74770141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37385073 + 37385074.

It is an arithmetic number, because the mean of its divisors is an integer number (37385074).

Almost surely, 2^74770147 is an apocalyptic number.

74770147 is a deficient number, since it is larger than the sum of its proper divisors (1).

74770147 is an equidigital number, since it uses as much as digits as its factorization.

74770147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38416, while the sum is 37.

The square root of 74770147 is about 8646.9732854913. The cubic root of 74770147 is about 421.2850795102.

The spelling of 74770147 in words is "seventy-four million, seven hundred seventy thousand, one hundred forty-seven".