74874869 has 4 divisors (see below), whose sum is σ = 74899596. Its totient is φ = 74850144.

The previous prime is 74874853. The next prime is 74874871. The reversal of 74874869 is 96847847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27952369 + 46922500 = 5287^2 + 6850^2 .

It is a cyclic number.

It is not a de Polignac number, because 74874869 - 2⁴ = 74874853 is a prime.

It is a super-2 number, since 2×74874869² = 11212492015534322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74874869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74874469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7064 + ... + 14129.

It is an arithmetic number, because the mean of its divisors is an integer number (18724899).

It is a Poulet number, since it divides 2^74874868-1.

Almost surely, 2^74874869 is an apocalyptic number.

It is an amenable number.

74874869 is a deficient number, since it is larger than the sum of its proper divisors (24727).

74874869 is a wasteful number, since it uses less digits than its factorization.

74874869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24726.

The product of its digits is 2709504, while the sum is 53.

The square root of 74874869 is about 8653.0265803359. The cubic root of 74874869 is about 421.4816697134.

The spelling of 74874869 in words is "seventy-four million, eight hundred seventy-four thousand, eight hundred sixty-nine".