7628664554 has 16 divisors (see below), whose sum is σ = 13085112768. Its totient is φ = 3267577152.

The previous prime is 7628664553. The next prime is 7628664577. The reversal of 7628664554 is 4554668267.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7628664496 and 7628664505.

It is not an unprimeable number, because it can be changed into a prime (7628664553) 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, 128444 + ... + 178199.

It is an arithmetic number, because the mean of its divisors is an integer number (817819548).

Almost surely, 2^7628664554 is an apocalyptic number.

7628664554 is a deficient number, since it is larger than the sum of its proper divisors (5456448214).

7628664554 is a wasteful number, since it uses less digits than its factorization.

7628664554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308429.

The product of its digits is 9676800, while the sum is 53.

The square root of 7628664554 is about 87342.2266375205. The cubic root of 7628664554 is about 1968.5638526694.

The spelling of 7628664554 in words is "seven billion, six hundred twenty-eight million, six hundred sixty-four thousand, five hundred fifty-four".