74678543 has 8 divisors (see below), whose sum is σ = 76950912. Its totient is φ = 72419616.

The previous prime is 74678533. The next prime is 74678561. The reversal of 74678543 is 34587647.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74678543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74678494 and 74678503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74678533) 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, 8546 + ... + 14912.

It is an arithmetic number, because the mean of its divisors is an integer number (9618864).

Almost surely, 2^74678543 is an apocalyptic number.

74678543 is a deficient number, since it is larger than the sum of its proper divisors (2272369).

74678543 is a wasteful number, since it uses less digits than its factorization.

74678543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721.

The product of its digits is 564480, while the sum is 44.

The square root of 74678543 is about 8641.6747798098. The cubic root of 74678543 is about 421.1129646102.

The spelling of 74678543 in words is "seventy-four million, six hundred seventy-eight thousand, five hundred forty-three".