7645832639 has 2 divisors, whose sum is σ = 7645832640. Its totient is φ = 7645832638.

The previous prime is 7645832633. The next prime is 7645832651. The reversal of 7645832639 is 9362385467.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9362385467) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7645832639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7645832633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3822916319 + 3822916320.

It is an arithmetic number, because the mean of its divisors is an integer number (3822916320).

Almost surely, 2^7645832639 is an apocalyptic number.

7645832639 is a deficient number, since it is larger than the sum of its proper divisors (1).

7645832639 is an equidigital number, since it uses as much as digits as its factorization.

7645832639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 53.

The square root of 7645832639 is about 87440.4519601769. The cubic root of 7645832639 is about 1970.0394779380.

The spelling of 7645832639 in words is "seven billion, six hundred forty-five million, eight hundred thirty-two thousand, six hundred thirty-nine".