7642823649 has 8 divisors (see below), whose sum is σ = 10192628160. Its totient is φ = 5094117456.

The previous prime is 7642823641. The next prime is 7642823659. The reversal of 7642823649 is 9463282467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7642823649 - 2³ = 7642823641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7642823641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258202 + ... + 286275.

It is an arithmetic number, because the mean of its divisors is an integer number (1274078520).

Almost surely, 2^7642823649 is an apocalyptic number.

It is an amenable number.

7642823649 is a deficient number, since it is larger than the sum of its proper divisors (2549804511).

7642823649 is a wasteful number, since it uses less digits than its factorization.

7642823649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549159.

The product of its digits is 3483648, while the sum is 51.

The square root of 7642823649 is about 87423.2443289541. The cubic root of 7642823649 is about 1969.7810100395.

The spelling of 7642823649 in words is "seven billion, six hundred forty-two million, eight hundred twenty-three thousand, six hundred forty-nine".