74367447 has 72 divisors (see below), whose sum is σ = 131363568. Its totient is φ = 37255680.

The previous prime is 74367439. The next prime is 74367457. The reversal of 74367447 is 74476347.

It is not a de Polignac number, because 74367447 - 2³ = 74367439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74367399 and 74367408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74367407) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 658063 + ... + 658175.

It is an arithmetic number, because the mean of its divisors is an integer number (1824494).

Almost surely, 2^74367447 is an apocalyptic number.

74367447 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

74367447 is a deficient number, since it is larger than the sum of its proper divisors (56996121).

74367447 is a wasteful number, since it uses less digits than its factorization.

74367447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 171 counting only the distinct ones).

The product of its digits is 395136, while the sum is 42.

The square root of 74367447 is about 8623.6562431488. The cubic root of 74367447 is about 420.5273930321.

Subtracting 74367447 from its reverse (74476347), we obtain a square (108900 = 330²).

The spelling of 74367447 in words is "seventy-four million, three hundred sixty-seven thousand, four hundred forty-seven".