74936993 has 4 divisors (see below), whose sum is σ = 75081348. Its totient is φ = 74792640.

The previous prime is 74936987. The next prime is 74936999. The reversal of 74936993 is 39963947.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39963947 = 331 ⋅120737.

It is an interprime number because it is at equal distance from previous prime (74936987) and next prime (74936999).

It can be written as a sum of positive squares in 2 ways, for example, as 32855824 + 42081169 = 5732^2 + 6487^2 .

It is a cyclic number.

It is not a de Polignac number, because 74936993 - 2⁴ = 74936977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74936999) 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, 71396 + ... + 72437.

It is an arithmetic number, because the mean of its divisors is an integer number (18770337).

Almost surely, 2^74936993 is an apocalyptic number.

It is an amenable number.

74936993 is a deficient number, since it is larger than the sum of its proper divisors (144355).

74936993 is a wasteful number, since it uses less digits than its factorization.

74936993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144354.

The product of its digits is 1102248, while the sum is 50.

The square root of 74936993 is about 8656.6155626781. The cubic root of 74936993 is about 421.5982058723.

The spelling of 74936993 in words is "seventy-four million, nine hundred thirty-six thousand, nine hundred ninety-three".