7661317 has 2 divisors, whose sum is σ = 7661318. Its totient is φ = 7661316.

The previous prime is 7661299. The next prime is 7661321. The reversal of 7661317 is 7131667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7134241 + 527076 = 2671^2 + 726^2 .

It is a cyclic number.

It is not a de Polignac number, because 7661317 - 2⁷ = 7661189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7661347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3830658 + 3830659.

It is an arithmetic number, because the mean of its divisors is an integer number (3830659).

Almost surely, 2^7661317 is an apocalyptic number.

It is an amenable number.

7661317 is a deficient number, since it is larger than the sum of its proper divisors (1).

7661317 is an equidigital number, since it uses as much as digits as its factorization.

7661317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 7661317 is about 2767.9084161150. The cubic root of 7661317 is about 197.1368490933.

The spelling of 7661317 in words is "seven million, six hundred sixty-one thousand, three hundred seventeen".