73874681 has 4 divisors (see below), whose sum is σ = 75871332. Its totient is φ = 71878032.

The previous prime is 73874627. The next prime is 73874701. The reversal of 73874681 is 18647837.

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 43349056 + 30525625 = 6584^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 73874681 - 2⁶ = 73874617 is a prime.

It is a super-2 number, since 2×73874681² = 10914936985703522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73874611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998270 + ... + 998343.

It is an arithmetic number, because the mean of its divisors is an integer number (18967833).

Almost surely, 2^73874681 is an apocalyptic number.

It is an amenable number.

73874681 is a deficient number, since it is larger than the sum of its proper divisors (1996651).

73874681 is a wasteful number, since it uses less digits than its factorization.

73874681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996650.

The product of its digits is 225792, while the sum is 44.

The square root of 73874681 is about 8595.0381616372. The cubic root of 73874681 is about 419.5965153777.

The spelling of 73874681 in words is "seventy-three million, eight hundred seventy-four thousand, six hundred eighty-one".