6649620294 has 8 divisors (see below), whose sum is σ = 13299240600. Its totient is φ = 2216540096.

The previous prime is 6649620277. The next prime is 6649620331. The reversal of 6649620294 is 4920269466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

6649620294 is an admirable number.

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, 554135019 + ... + 554135030.

It is an arithmetic number, because the mean of its divisors is an integer number (1662405075).

Almost surely, 2^6649620294 is an apocalyptic number.

6649620294 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6649620294 is a wasteful number, since it uses less digits than its factorization.

6649620294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108270054.

The product of its (nonzero) digits is 1119744, while the sum is 48.

The square root of 6649620294 is about 81545.2039914059. The cubic root of 6649620294 is about 1880.4665635067.

The spelling of 6649620294 in words is "six billion, six hundred forty-nine million, six hundred twenty thousand, two hundred ninety-four".