7670639 has 2 divisors, whose sum is σ = 7670640. Its totient is φ = 7670638.

The previous prime is 7670573. The next prime is 7670653. The reversal of 7670639 is 9360767.

7670639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7670639 - 2¹² = 7666543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7670539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835319 + 3835320.

It is an arithmetic number, because the mean of its divisors is an integer number (3835320).

Almost surely, 2^7670639 is an apocalyptic number.

7670639 is a deficient number, since it is larger than the sum of its proper divisors (1).

7670639 is an equidigital number, since it uses as much as digits as its factorization.

7670639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 7670639 is about 2769.5918471862. The cubic root of 7670639 is about 197.2167729000.

The spelling of 7670639 in words is "seven million, six hundred seventy thousand, six hundred thirty-nine".