74634893 has 4 divisors (see below), whose sum is σ = 77208540. Its totient is φ = 72061248.

The previous prime is 74634881. The next prime is 74634943. The reversal of 74634893 is 39843647.

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: 39843647 = 1867 ⋅21341.

It can be written as a sum of positive squares in 2 ways, for example, as 43072969 + 31561924 = 6563^2 + 5618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74634893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74634853) 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, 1286780 + ... + 1286837.

It is an arithmetic number, because the mean of its divisors is an integer number (19302135).

Almost surely, 2^74634893 is an apocalyptic number.

It is an amenable number.

74634893 is a deficient number, since it is larger than the sum of its proper divisors (2573647).

74634893 is a wasteful number, since it uses less digits than its factorization.

74634893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573646.

The product of its digits is 435456, while the sum is 44.

The square root of 74634893 is about 8639.1488585392. The cubic root of 74634893 is about 421.0309010405.

The spelling of 74634893 in words is "seventy-four million, six hundred thirty-four thousand, eight hundred ninety-three".