10678021 has 2 divisors, whose sum is σ = 10678022. Its totient is φ = 10678020.

The previous prime is 10678009. The next prime is 10678027. The reversal of 10678021 is 12087601.

10678021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5452225 + 5225796 = 2335^2 + 2286^2 .

It is a cyclic number.

It is not a de Polignac number, because 10678021 - 2⁷ = 10677893 is a prime.

It is a super-2 number, since 2×10678021² = 228040264952882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10678027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5339010 + 5339011.

It is an arithmetic number, because the mean of its divisors is an integer number (5339011).

Almost surely, 2^10678021 is an apocalyptic number.

It is an amenable number.

10678021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10678021 is an equidigital number, since it uses as much as digits as its factorization.

10678021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 10678021 is about 3267.7241315631. The cubic root of 10678021 is about 220.2065621925.

The spelling of 10678021 in words is "ten million, six hundred seventy-eight thousand, twenty-one".