74213447 has 8 divisors (see below), whose sum is σ = 92525952. Its totient is φ = 57828600.

The previous prime is 74213437. The next prime is 74213467. The reversal of 74213447 is 74431247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74213447 - 2⁴ = 74213431 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 (74213437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481829 + ... + 481982.

It is an arithmetic number, because the mean of its divisors is an integer number (11565744).

Almost surely, 2^74213447 is an apocalyptic number.

74213447 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

74213447 is a deficient number, since it is larger than the sum of its proper divisors (18312505).

74213447 is a wasteful number, since it uses less digits than its factorization.

74213447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963829.

The product of its digits is 18816, while the sum is 32.

The square root of 74213447 is about 8614.7226885141. The cubic root of 74213447 is about 420.2369165978.

The spelling of 74213447 in words is "seventy-four million, two hundred thirteen thousand, four hundred forty-seven".