6634956993 has 32 divisors (see below), whose sum is σ = 10571520000. Its totient is φ = 3619161216.

The previous prime is 6634956989. The next prime is 6634957093. The reversal of 6634956993 is 3996594366.

It is not a de Polignac number, because 6634956993 - 2² = 6634956989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6634956973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227253 + ... + 254781.

It is an arithmetic number, because the mean of its divisors is an integer number (330360000).

Almost surely, 2^6634956993 is an apocalyptic number.

It is an amenable number.

6634956993 is a deficient number, since it is larger than the sum of its proper divisors (3936563007).

6634956993 is a wasteful number, since it uses less digits than its factorization.

6634956993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28061.

The product of its digits is 28343520, while the sum is 60.

The square root of 6634956993 is about 81455.2453375472. The cubic root of 6634956993 is about 1879.0833196074.

The spelling of 6634956993 in words is "six billion, six hundred thirty-four million, nine hundred fifty-six thousand, nine hundred ninety-three".