6475772661 has 8 divisors (see below), whose sum is σ = 8719852704. Its totient is φ = 4274437200.

The previous prime is 6475772657. The next prime is 6475772707. The reversal of 6475772661 is 1662775746.

It is a happy number.

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

It is not a de Polignac number, because 6475772661 - 2² = 6475772657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6475772161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10685791 + ... + 10686396.

It is an arithmetic number, because the mean of its divisors is an integer number (1089981588).

Almost surely, 2^6475772661 is an apocalyptic number.

It is an amenable number.

6475772661 is a deficient number, since it is larger than the sum of its proper divisors (2244080043).

6475772661 is a wasteful number, since it uses less digits than its factorization.

6475772661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21372291.

The product of its digits is 2963520, while the sum is 51.

The square root of 6475772661 is about 80472.1856357835. The cubic root of 6475772661 is about 1863.9340041112.

The spelling of 6475772661 in words is "six billion, four hundred seventy-five million, seven hundred seventy-two thousand, six hundred sixty-one".