7648458779 has 16 divisors (see below), whose sum is σ = 8407342944. Its totient is φ = 6914419200.

The previous prime is 7648458757. The next prime is 7648458791. The reversal of 7648458779 is 9778548467.

It is not a de Polignac number, because 7648458779 - 2¹⁶ = 7648393243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7648458749) 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 15 ways as a sum of consecutive naturals, for example, 383699 + ... + 403139.

It is an arithmetic number, because the mean of its divisors is an integer number (525458934).

Almost surely, 2^7648458779 is an apocalyptic number.

7648458779 is a deficient number, since it is larger than the sum of its proper divisors (758884165).

7648458779 is a wasteful number, since it uses less digits than its factorization.

7648458779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20078.

The product of its digits is 94832640, while the sum is 65.

The square root of 7648458779 is about 87455.4674048455. The cubic root of 7648458779 is about 1970.2650041604.

The spelling of 7648458779 in words is "seven billion, six hundred forty-eight million, four hundred fifty-eight thousand, seven hundred seventy-nine".