1006604639 has 2 divisors, whose sum is σ = 1006604640. Its totient is φ = 1006604638.

The previous prime is 1006604579. The next prime is 1006604657. The reversal of 1006604639 is 9364066001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1006604639 - 2²⁸ = 738169183 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1006604599 and 1006604608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006604659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503302319 + 503302320.

It is an arithmetic number, because the mean of its divisors is an integer number (503302320).

Almost surely, 2^1006604639 is an apocalyptic number.

1006604639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006604639 is an equidigital number, since it uses as much as digits as its factorization.

1006604639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1006604639 is about 31727.0332524174. The cubic root of 1006604639 is about 1002.1967172333.

The spelling of 1006604639 in words is "one billion, six million, six hundred four thousand, six hundred thirty-nine".