2670695021 has 2 divisors, whose sum is σ = 2670695022. Its totient is φ = 2670695020.

The previous prime is 2670694937. The next prime is 2670695063. The reversal of 2670695021 is 1205960762.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2024010121 + 646684900 = 44989^2 + 25430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2670695021 - 2¹⁰ = 2670693997 is a prime.

It is a super-2 number, since 2×2670695021² = 14265223790388380882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2670695921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335347510 + 1335347511.

It is an arithmetic number, because the mean of its divisors is an integer number (1335347511).

Almost surely, 2^2670695021 is an apocalyptic number.

It is an amenable number.

2670695021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2670695021 is an equidigital number, since it uses as much as digits as its factorization.

2670695021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 2670695021 is about 51678.7676033398. The cubic root of 2670695021 is about 1387.4204736066.

The spelling of 2670695021 in words is "two billion, six hundred seventy million, six hundred ninety-five thousand, twenty-one".