7718461 has 2 divisors, whose sum is σ = 7718462. Its totient is φ = 7718460.

The previous prime is 7718449. The next prime is 7718471. The reversal of 7718461 is 1648177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7458361 + 260100 = 2731^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 7718461 - 2¹⁵ = 7685693 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7718401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3859230 + 3859231.

It is an arithmetic number, because the mean of its divisors is an integer number (3859231).

Almost surely, 2^7718461 is an apocalyptic number.

It is an amenable number.

7718461 is a deficient number, since it is larger than the sum of its proper divisors (1).

7718461 is an equidigital number, since it uses as much as digits as its factorization.

7718461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 34.

The square root of 7718461 is about 2778.2118349759. The cubic root of 7718461 is about 197.6257683153.

The spelling of 7718461 in words is "seven million, seven hundred eighteen thousand, four hundred sixty-one".