7881473 has 4 divisors (see below), whose sum is σ = 7939140. Its totient is φ = 7823808.

The previous prime is 7881373. The next prime is 7881487. The reversal of 7881473 is 3741887.

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 5726449 + 2155024 = 2393^2 + 1468^2 .

It is a cyclic number.

It is not a de Polignac number, because 7881473 - 2¹⁰ = 7880449 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7881073) 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, 28628 + ... + 28901.

It is an arithmetic number, because the mean of its divisors is an integer number (1984785).

Almost surely, 2^7881473 is an apocalyptic number.

It is an amenable number.

7881473 is a deficient number, since it is larger than the sum of its proper divisors (57667).

7881473 is a wasteful number, since it uses less digits than its factorization.

7881473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57666.

The product of its digits is 37632, while the sum is 38.

The square root of 7881473 is about 2807.3961245254. The cubic root of 7881473 is about 199.0073564446.

It can be divided in two parts, 78814 and 73, that added together give a palindrome (78887).

The spelling of 7881473 in words is "seven million, eight hundred eighty-one thousand, four hundred seventy-three".