74770447 has 12 divisors (see below), whose sum is σ = 78596784. Its totient is φ = 71123360.

The previous prime is 74770441. The next prime is 74770457. The reversal of 74770447 is 74407747.

It is not a de Polignac number, because 74770447 - 2¹⁵ = 74737679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74770441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148398 + ... + 148900.

It is an arithmetic number, because the mean of its divisors is an integer number (6549732).

Almost surely, 2^74770447 is an apocalyptic number.

74770447 is a deficient number, since it is larger than the sum of its proper divisors (3826337).

74770447 is a wasteful number, since it uses less digits than its factorization.

74770447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 153664, while the sum is 40.

The square root of 74770447 is about 8646.9906325843. The cubic root of 74770447 is about 421.2856429497.

The spelling of 74770447 in words is "seventy-four million, seven hundred seventy thousand, four hundred forty-seven".