7863313 has 2 divisors, whose sum is σ = 7863314. Its totient is φ = 7863312.

The previous prime is 7863311. The next prime is 7863347. The reversal of 7863313 is 3133687.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7354944 + 508369 = 2712^2 + 713^2 .

It is a cyclic number.

It is not a de Polignac number, because 7863313 - 2¹ = 7863311 is a prime.

Together with 7863311, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 7⁸ + 8⁷ + 6⁴ + 3² + 3³ + 1 + 3³ .

It is not a weakly prime, because it can be changed into another prime (7863311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3931656 + 3931657.

It is an arithmetic number, because the mean of its divisors is an integer number (3931657).

Almost surely, 2^7863313 is an apocalyptic number.

It is an amenable number.

7863313 is a deficient number, since it is larger than the sum of its proper divisors (1).

7863313 is an equidigital number, since it uses as much as digits as its factorization.

7863313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 7863313 is about 2804.1599455095. The cubic root of 7863313 is about 198.8543921088.

The spelling of 7863313 in words is "seven million, eight hundred sixty-three thousand, three hundred thirteen".