7663081 has 2 divisors, whose sum is σ = 7663082. Its totient is φ = 7663080.

The previous prime is 7663069. The next prime is 7663087. The reversal of 7663081 is 1803667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5103081 + 2560000 = 2259^2 + 1600^2 .

It is an emirp because it is prime and its reverse (1803667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7663081 - 2⁵ = 7663049 is a prime.

It is a super-2 number, since 2×7663081² = 117445620825122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7663087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3831540 + 3831541.

It is an arithmetic number, because the mean of its divisors is an integer number (3831541).

Almost surely, 2^7663081 is an apocalyptic number.

It is an amenable number.

7663081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7663081 is an equidigital number, since it uses as much as digits as its factorization.

7663081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 7663081 is about 2768.2270499365. The cubic root of 7663081 is about 197.1519780289.

It can be divided in two parts, 76 and 63081, that multiplied together give a triangular number (4794156 = T₃₀₉₆).

The spelling of 7663081 in words is "seven million, six hundred sixty-three thousand, eighty-one".