890761 has 2 divisors, whose sum is σ = 890762. Its totient is φ = 890760.

The previous prime is 890737. The next prime is 890789. The reversal of 890761 is 167098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571536 + 319225 = 756^2 + 565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890761 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (890711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445380 + 445381.

It is an arithmetic number, because the mean of its divisors is an integer number (445381).

2⁸⁹⁰⁷⁶¹ is an apocalyptic number.

It is an amenable number.

890761 is a deficient number, since it is larger than the sum of its proper divisors (1).

890761 is an equidigital number, since it uses as much as digits as its factorization.

890761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 890761 is about 943.8013562186. The cubic root of 890761 is about 96.2174253066.

The spelling of 890761 in words is "eight hundred ninety thousand, seven hundred sixty-one".