74839690 has 8 divisors (see below), whose sum is σ = 134711460. Its totient is φ = 29935872.

The previous prime is 74839679. The next prime is 74839711. The reversal of 74839690 is 9693847.

It can be written as a sum of positive squares in 2 ways, for example, as 72471169 + 2368521 = 8513^2 + 1539^2 .

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

It is a super-2 number, since 2×74839690² = 11201958398592200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74839690.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3741975 + ... + 3741994.

Almost surely, 2^74839690 is an apocalyptic number.

74839690 is a deficient number, since it is larger than the sum of its proper divisors (59871770).

74839690 is a wasteful number, since it uses less digits than its factorization.

74839690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483976.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 74839690 is about 8650.9935845543. The cubic root of 74839690 is about 421.4156501148.

The spelling of 74839690 in words is "seventy-four million, eight hundred thirty-nine thousand, six hundred ninety".