10702721 has 2 divisors, whose sum is σ = 10702722. Its totient is φ = 10702720.

The previous prime is 10702717. The next prime is 10702733. The reversal of 10702721 is 12720701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 211600 = 3239^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 10702721 - 2² = 10702717 is a prime.

It is a super-2 number, since 2×10702721² = 229096473607682, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10702693 and 10702702.

It is not a weakly prime, because it can be changed into another prime (10702921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5351360 + 5351361.

It is an arithmetic number, because the mean of its divisors is an integer number (5351361).

Almost surely, 2^10702721 is an apocalyptic number.

It is an amenable number.

10702721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10702721 is an equidigital number, since it uses as much as digits as its factorization.

10702721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 10702721 is about 3271.5013373068. The cubic root of 10702721 is about 220.3762226450.

The spelling of 10702721 in words is "ten million, seven hundred two thousand, seven hundred twenty-one".