7628730639 has 8 divisors (see below), whose sum is σ = 10172047152. Its totient is φ = 5085617280.

The previous prime is 7628730631. The next prime is 7628730649. The reversal of 7628730639 is 9360378267.

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

It is not a de Polignac number, because 7628730639 - 2³ = 7628730631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7628730591 and 7628730600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7628730631) 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 7 ways as a sum of consecutive naturals, for example, 105849 + ... + 162669.

It is an arithmetic number, because the mean of its divisors is an integer number (1271505894).

Almost surely, 2^7628730639 is an apocalyptic number.

7628730639 is a deficient number, since it is larger than the sum of its proper divisors (2543316513).

7628730639 is a wasteful number, since it uses less digits than its factorization.

7628730639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101577.

The product of its (nonzero) digits is 2286144, while the sum is 51.

The square root of 7628730639 is about 87342.6049474138. The cubic root of 7628730639 is about 1968.5695370267.

The spelling of 7628730639 in words is "seven billion, six hundred twenty-eight million, seven hundred thirty thousand, six hundred thirty-nine".