74129693 has 4 divisors (see below), whose sum is σ = 80868768. Its totient is φ = 67390620.

The previous prime is 74129687. The next prime is 74129717. The reversal of 74129693 is 39692147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39692147 = 11 ⋅3608377.

It is not a de Polignac number, because 74129693 - 2⁴ = 74129677 is a prime.

It is a super-2 number, since 2×74129693² = 10990422768548498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74129693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74129603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369521 + ... + 3369542.

It is an arithmetic number, because the mean of its divisors is an integer number (20217192).

Almost surely, 2^74129693 is an apocalyptic number.

It is an amenable number.

74129693 is a deficient number, since it is larger than the sum of its proper divisors (6739075).

74129693 is a wasteful number, since it uses less digits than its factorization.

74129693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739074.

The product of its digits is 81648, while the sum is 41.

The square root of 74129693 is about 8609.8602195390. The cubic root of 74129693 is about 420.0787701843.

The spelling of 74129693 in words is "seventy-four million, one hundred twenty-nine thousand, six hundred ninety-three".