6634172965 has 48 divisors (see below), whose sum is σ = 9600076800. Its totient is φ = 4383130752.

The previous prime is 6634172959. The next prime is 6634172971. The reversal of 6634172965 is 5692714366.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6634172959) and next prime (6634172971).

It is a de Polignac number, because none of the positive numbers 2^k-6634172965 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

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 47 ways as a sum of consecutive naturals, for example, 6102652 + ... + 6103738.

It is an arithmetic number, because the mean of its divisors is an integer number (200001600).

Almost surely, 2^6634172965 is an apocalyptic number.

It is an amenable number.

6634172965 is a deficient number, since it is larger than the sum of its proper divisors (2965903835).

6634172965 is a wasteful number, since it uses less digits than its factorization.

6634172965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994 (or 1987 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The square root of 6634172965 is about 81450.4325648428. The cubic root of 6634172965 is about 1879.0093019476.

The spelling of 6634172965 in words is "six billion, six hundred thirty-four million, one hundred seventy-two thousand, nine hundred sixty-five".