74689730 has 8 divisors (see below), whose sum is σ = 134441532. Its totient is φ = 29875888.

The previous prime is 74689711. The next prime is 74689751. The reversal of 74689730 is 3798647.

It can be written as a sum of positive squares in 2 ways, for example, as 62362609 + 12327121 = 7897^2 + 3511^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3734477 + ... + 3734496.

Almost surely, 2^74689730 is an apocalyptic number.

74689730 is a deficient number, since it is larger than the sum of its proper divisors (59751802).

74689730 is a wasteful number, since it uses less digits than its factorization.

74689730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7468980.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 74689730 is about 8642.3220259372. The cubic root of 74689730 is about 421.1339914242.

The spelling of 74689730 in words is "seventy-four million, six hundred eighty-nine thousand, seven hundred thirty".