74642849 has 8 divisors (see below), whose sum is σ = 78650880. Its totient is φ = 70642800.

The previous prime is 74642831. The next prime is 74642851. The reversal of 74642849 is 94824647.

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 74642849 - 2¹⁶ = 74577313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74645849) 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, 34304 + ... + 36414.

It is an arithmetic number, because the mean of its divisors is an integer number (9831360).

Almost surely, 2^74642849 is an apocalyptic number.

It is an amenable number.

74642849 is a deficient number, since it is larger than the sum of its proper divisors (4008031).

74642849 is a wasteful number, since it uses less digits than its factorization.

74642849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991.

The product of its digits is 387072, while the sum is 44.

The square root of 74642849 is about 8639.6093082963. The cubic root of 74642849 is about 421.0458609906.

The spelling of 74642849 in words is "seventy-four million, six hundred forty-two thousand, eight hundred forty-nine".