74643693 has 8 divisors (see below), whose sum is σ = 99624000. Its totient is φ = 49712928.

The previous prime is 74643659. The next prime is 74643707. The reversal of 74643693 is 39634647.

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

It is not a de Polignac number, because 74643693 - 2¹² = 74639597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74643623) 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, 8713 + ... + 15006.

It is an arithmetic number, because the mean of its divisors is an integer number (12453000).

Almost surely, 2^74643693 is an apocalyptic number.

It is an amenable number.

74643693 is a deficient number, since it is larger than the sum of its proper divisors (24980307).

74643693 is a wasteful number, since it uses less digits than its factorization.

74643693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24771.

The product of its digits is 326592, while the sum is 42.

The square root of 74643693 is about 8639.6581529595. The cubic root of 74643693 is about 421.0474479315.

The spelling of 74643693 in words is "seventy-four million, six hundred forty-three thousand, six hundred ninety-three".