7649879823 has 12 divisors (see below), whose sum is σ = 11050687648. Its totient is φ = 5099522400.

The previous prime is 7649879813. The next prime is 7649879851. The reversal of 7649879823 is 3289789467.

7649879823 is a `hidden beast` number, since 76 + 498 + 79 + 8 + 2 + 3 = 666.

It is not a de Polignac number, because 7649879823 - 2⁵ = 7649879791 is a prime.

It is a super-2 number, since 2×7649879823² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7649879813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132186 + ... + 181032.

Almost surely, 2^7649879823 is an apocalyptic number.

7649879823 is a deficient number, since it is larger than the sum of its proper divisors (3400807825).

7649879823 is a wasteful number, since it uses less digits than its factorization.

7649879823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66254 (or 66251 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 7649879823 is about 87463.5914137991. The cubic root of 7649879823 is about 1970.3870182796.

The spelling of 7649879823 in words is "seven billion, six hundred forty-nine million, eight hundred seventy-nine thousand, eight hundred twenty-three".