7876481 has 4 divisors (see below), whose sum is σ = 7984452. Its totient is φ = 7768512.

The previous prime is 7876471. The next prime is 7876483. The reversal of 7876481 is 1846787.

7876481 = 1984² + 1985².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1846787 = 109 ⋅16943.

It can be written as a sum of positive squares in 2 ways, for example, as 3936256 + 3940225 = 1984^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 7876481 - 2⁶ = 7876417 is a prime.

It is a super-2 number, since 2×7876481² = 124077905886722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7876483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53876 + ... + 54021.

It is an arithmetic number, because the mean of its divisors is an integer number (1996113).

Almost surely, 2^7876481 is an apocalyptic number.

7876481 is the 1985-th centered square number.

It is an amenable number.

7876481 is a deficient number, since it is larger than the sum of its proper divisors (107971).

7876481 is a wasteful number, since it uses less digits than its factorization.

7876481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107970.

The product of its digits is 75264, while the sum is 41.

The square root of 7876481 is about 2806.5069036081. The cubic root of 7876481 is about 198.9653315363.

The spelling of 7876481 in words is "seven million, eight hundred seventy-six thousand, four hundred eighty-one".