20834761 has 2 divisors, whose sum is σ = 20834762. Its totient is φ = 20834760.

The previous prime is 20834717. The next prime is 20834797. The reversal of 20834761 is 16743802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14584761 + 6250000 = 3819^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 20834761 - 2⁹ = 20834249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20834461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10417380 + 10417381.

It is an arithmetic number, because the mean of its divisors is an integer number (10417381).

Almost surely, 2^20834761 is an apocalyptic number.

It is an amenable number.

20834761 is a deficient number, since it is larger than the sum of its proper divisors (1).

20834761 is an equidigital number, since it uses as much as digits as its factorization.

20834761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20834761 is about 4564.5110362447. The cubic root of 20834761 is about 275.1668893329.

It can be divided in two parts, 208 and 34761, that added together give a square (34969 = 187²).

The spelling of 20834761 in words is "twenty million, eight hundred thirty-four thousand, seven hundred sixty-one".