10700821 has 2 divisors, whose sum is σ = 10700822. Its totient is φ = 10700820.

The previous prime is 10700813. The next prime is 10700831. The reversal of 10700821 is 12800701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10692900 + 7921 = 3270^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 10700821 - 2³ = 10700813 is a prime.

It is a super-2 number, since 2×10700821² = 229015140148082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10700831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5350410 + 5350411.

It is an arithmetic number, because the mean of its divisors is an integer number (5350411).

Almost surely, 2^10700821 is an apocalyptic number.

It is an amenable number.

10700821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10700821 is an equidigital number, since it uses as much as digits as its factorization.

10700821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 10700821 is about 3271.2109378638. The cubic root of 10700821 is about 220.3631811140.

The spelling of 10700821 in words is "ten million, seven hundred thousand, eight hundred twenty-one".