6620464356 has 48 divisors (see below), whose sum is σ = 16900773120. Its totient is φ = 2000405920.

The previous prime is 6620464351. The next prime is 6620464397. The reversal of 6620464356 is 6534640266.

It is not an unprimeable number, because it can be changed into a prime (6620464351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26466 + ... + 118073.

It is an arithmetic number, because the mean of its divisors is an integer number (352099440).

Almost surely, 2^6620464356 is an apocalyptic number.

6620464356 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6620464356 is an abundant number, since it is smaller than the sum of its proper divisors (10280308764).

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

6620464356 is a wasteful number, since it uses less digits than its factorization.

6620464356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144904 (or 144902 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The square root of 6620464356 is about 81366.2359704564. The cubic root of 6620464356 is about 1877.7141710866.

The spelling of 6620464356 in words is "six billion, six hundred twenty million, four hundred sixty-four thousand, three hundred fifty-six".