7628869427 has 4 divisors (see below), whose sum is σ = 7891933920. Its totient is φ = 7365804936.

The previous prime is 7628869399. The next prime is 7628869439. The reversal of 7628869427 is 7249688267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7249688267 = 17 ⋅426452251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7628869427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7628869477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131532203 + ... + 131532260.

It is an arithmetic number, because the mean of its divisors is an integer number (1972983480).

Almost surely, 2^7628869427 is an apocalyptic number.

7628869427 is a deficient number, since it is larger than the sum of its proper divisors (263064493).

7628869427 is a wasteful number, since it uses less digits than its factorization.

7628869427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263064492.

The product of its digits is 16257024, while the sum is 59.

The square root of 7628869427 is about 87343.3994472393. The cubic root of 7628869427 is about 1968.5814748875.

The spelling of 7628869427 in words is "seven billion, six hundred twenty-eight million, eight hundred sixty-nine thousand, four hundred twenty-seven".