8490761 has 2 divisors, whose sum is σ = 8490762. Its totient is φ = 8490760.

The previous prime is 8490721. The next prime is 8490763. The reversal of 8490761 is 1670948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6943225 + 1547536 = 2635^2 + 1244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8490761 is a prime.

Together with 8490763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8490763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245380 + 4245381.

It is an arithmetic number, because the mean of its divisors is an integer number (4245381).

Almost surely, 2^8490761 is an apocalyptic number.

It is an amenable number.

8490761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8490761 is an equidigital number, since it uses as much as digits as its factorization.

8490761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 8490761 is about 2913.8910412025. The cubic root of 8490761 is about 204.0087863062.

The spelling of 8490761 in words is "eight million, four hundred ninety thousand, seven hundred sixty-one".