74868649 has 8 divisors (see below), whose sum is σ = 77614848. Its totient is φ = 72160560.

The previous prime is 74868637. The next prime is 74868653. The reversal of 74868649 is 94686847.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 74868649 - 2¹⁵ = 74835881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74868596 and 74868605.

It is not an unprimeable number, because it can be changed into a prime (74868049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5497 + ... + 13414.

It is an arithmetic number, because the mean of its divisors is an integer number (9701856).

Almost surely, 2^74868649 is an apocalyptic number.

It is an amenable number.

74868649 is a deficient number, since it is larger than the sum of its proper divisors (2746199).

74868649 is a wasteful number, since it uses less digits than its factorization.

74868649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19055.

The product of its digits is 2322432, while the sum is 52.

The square root of 74868649 is about 8652.6671610550. The cubic root of 74868649 is about 421.4699982914.

The spelling of 74868649 in words is "seventy-four million, eight hundred sixty-eight thousand, six hundred forty-nine".