6870644629 has 2 divisors, whose sum is σ = 6870644630. Its totient is φ = 6870644628.

The previous prime is 6870644611. The next prime is 6870644687. The reversal of 6870644629 is 9264460786.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5687422225 + 1183222404 = 75415^2 + 34398^2 .

It is a cyclic number.

It is not a de Polignac number, because 6870644629 - 2⁵ = 6870644597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6870644609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3435322314 + 3435322315.

It is an arithmetic number, because the mean of its divisors is an integer number (3435322315).

Almost surely, 2^6870644629 is an apocalyptic number.

It is an amenable number.

6870644629 is a deficient number, since it is larger than the sum of its proper divisors (1).

6870644629 is an equidigital number, since it uses as much as digits as its factorization.

6870644629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The square root of 6870644629 is about 82889.3517226429. The cubic root of 6870644629 is about 1901.0746117686.

The spelling of 6870644629 in words is "six billion, eight hundred seventy million, six hundred forty-four thousand, six hundred twenty-nine".