761861 has 2 divisors, whose sum is σ = 761862. Its totient is φ = 761860.

The previous prime is 761833. The next prime is 761863. The reversal of 761861 is 168167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 112225 = 806^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 761861 - 2¹⁴ = 745477 is a prime.

Together with 761863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380930 + 380931.

It is an arithmetic number, because the mean of its divisors is an integer number (380931).

2⁷⁶¹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

761861 is a deficient number, since it is larger than the sum of its proper divisors (1).

761861 is an equidigital number, since it uses as much as digits as its factorization.

761861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 761861 is about 872.8464928039. The cubic root of 761861 is about 91.3324793759.

The spelling of 761861 in words is "seven hundred sixty-one thousand, eight hundred sixty-one".