6650978588 has 12 divisors (see below), whose sum is σ = 11656879080. Its totient is φ = 3320441712.

The previous prime is 6650978531. The next prime is 6650978647. The reversal of 6650978588 is 8858790566.

It is a self number, because there is not a number n which added to its sum of digits gives 6650978588.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258931 + ... + 1264202.

It is an arithmetic number, because the mean of its divisors is an integer number (971406590).

Almost surely, 2^6650978588 is an apocalyptic number.

It is an amenable number.

6650978588 is a deficient number, since it is larger than the sum of its proper divisors (5005900492).

6650978588 is a wasteful number, since it uses less digits than its factorization.

6650978588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523796 (or 2523794 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 62.

The square root of 6650978588 is about 81553.5320387781. The cubic root of 6650978588 is about 1880.5945935016.

It can be divided in two parts, 6650978 and 588, that added together give a palindrome (6651566).

The spelling of 6650978588 in words is "six billion, six hundred fifty million, nine hundred seventy-eight thousand, five hundred eighty-eight".