6690626616 has 32 divisors (see below), whose sum is σ = 16731138960. Its totient is φ = 2229599232.

The previous prime is 6690626563. The next prime is 6690626651. The reversal of 6690626616 is 6166260966.

It is a happy number.

It is a super-2 number, since 2×6690626616² = 89528969029455222912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56296 + ... + 128648.

Almost surely, 2^6690626616 is an apocalyptic number.

It is an amenable number.

6690626616 is an abundant number, since it is smaller than the sum of its proper divisors (10040512344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6690626616 is a wasteful number, since it uses less digits than its factorization.

6690626616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76215 (or 76211 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 6690626616 is about 81796.2506231184. The cubic root of 6690626616 is about 1884.3240795538.

The spelling of 6690626616 in words is "six billion, six hundred ninety million, six hundred twenty-six thousand, six hundred sixteen".