74686426 has 8 divisors (see below), whose sum is σ = 115892820. Its totient is φ = 36055488.

The previous prime is 74686421. The next prime is 74686429. The reversal of 74686426 is 62468647.

It can be written as a sum of positive squares in 2 ways, for example, as 74563225 + 123201 = 8635^2 + 351^2 .

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

It is not an unprimeable number, because it can be changed into a prime (74686421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643791 + ... + 643906.

Almost surely, 2^74686426 is an apocalyptic number.

74686426 is a deficient number, since it is larger than the sum of its proper divisors (41206394).

74686426 is a wasteful number, since it uses less digits than its factorization.

74686426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287728.

The product of its digits is 387072, while the sum is 43.

The square root of 74686426 is about 8642.1308714923. The cubic root of 74686426 is about 421.1277815244.

The spelling of 74686426 in words is "seventy-four million, six hundred eighty-six thousand, four hundred twenty-six".