820652741 has 2 divisors, whose sum is σ = 820652742. Its totient is φ = 820652740.

The previous prime is 820652699. The next prime is 820652753. The reversal of 820652741 is 147256028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455651716 + 365001025 = 21346^2 + 19105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-820652741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820652941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410326370 + 410326371.

It is an arithmetic number, because the mean of its divisors is an integer number (410326371).

Almost surely, 2^820652741 is an apocalyptic number.

It is an amenable number.

820652741 is a deficient number, since it is larger than the sum of its proper divisors (1).

820652741 is an equidigital number, since it uses as much as digits as its factorization.

820652741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 820652741 is about 28647.0372115512. The cubic root of 820652741 is about 936.2384538235.

The spelling of 820652741 in words is "eight hundred twenty million, six hundred fifty-two thousand, seven hundred forty-one".