836729261 has 2 divisors, whose sum is σ = 836729262. Its totient is φ = 836729260.

The previous prime is 836729251. The next prime is 836729263. The reversal of 836729261 is 162927638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 805481161 + 31248100 = 28381^2 + 5590^2 .

It is a cyclic number.

It is not a de Polignac number, because 836729261 - 2¹⁰ = 836728237 is a prime.

It is a super-2 number, since 2×836729261² = 1400231712427212242, which contains 22 as substring.

Together with 836729263, 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 (836729263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418364630 + 418364631.

It is an arithmetic number, because the mean of its divisors is an integer number (418364631).

Almost surely, 2^836729261 is an apocalyptic number.

It is an amenable number.

836729261 is a deficient number, since it is larger than the sum of its proper divisors (1).

836729261 is an equidigital number, since it uses as much as digits as its factorization.

836729261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 836729261 is about 28926.2728501271. The cubic root of 836729261 is about 942.3125725425.

The spelling of 836729261 in words is "eight hundred thirty-six million, seven hundred twenty-nine thousand, two hundred sixty-one".