7873651 has 2 divisors, whose sum is σ = 7873652. Its totient is φ = 7873650.

The previous prime is 7873633. The next prime is 7873661. The reversal of 7873651 is 1563787.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7873651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7873651.

It is not a weakly prime, because it can be changed into another prime (7873631) 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 as a sum of consecutive naturals, namely, 3936825 + 3936826.

It is an arithmetic number, because the mean of its divisors is an integer number (3936826).

Almost surely, 2^7873651 is an apocalyptic number.

7873651 is a deficient number, since it is larger than the sum of its proper divisors (1).

7873651 is an equidigital number, since it uses as much as digits as its factorization.

7873651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 37.

The square root of 7873651 is about 2806.0026728426. The cubic root of 7873651 is about 198.9414994325.

It can be divided in two parts, 78736 and 51, that added together give a palindrome (78787).

The spelling of 7873651 in words is "seven million, eight hundred seventy-three thousand, six hundred fifty-one".