7626643393 has 4 divisors (see below), whose sum is σ = 7958236608. Its totient is φ = 7295050180.

The previous prime is 7626643373. The next prime is 7626643397. The reversal of 7626643393 is 3933466267.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3933466267 = 27631 ⋅142357.

It is a cyclic number.

It is not a de Polignac number, because 7626643393 - 2²⁵ = 7593088961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7626643397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165796573 + ... + 165796618.

It is an arithmetic number, because the mean of its divisors is an integer number (1989559152).

Almost surely, 2^7626643393 is an apocalyptic number.

It is an amenable number.

7626643393 is a deficient number, since it is larger than the sum of its proper divisors (331593215).

7626643393 is a wasteful number, since it uses less digits than its factorization.

7626643393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331593214.

The product of its digits is 2939328, while the sum is 49.

The square root of 7626643393 is about 87330.6555168344. The cubic root of 7626643393 is about 1968.3899849327.

The spelling of 7626643393 in words is "seven billion, six hundred twenty-six million, six hundred forty-three thousand, three hundred ninety-three".