6617667901 has 16 divisors (see below), whose sum is σ = 7158135600. Its totient is φ = 6081753600.

The previous prime is 6617667887. The next prime is 6617667913. The reversal of 6617667901 is 1097667166.

It can be written as a sum of positive squares in 8 ways, for example, as 611572900 + 6006095001 = 24730^2 + 77499^2 .

It is not a de Polignac number, because 6617667901 - 2⁵ = 6617667869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6617667941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5085951 + ... + 5087251.

It is an arithmetic number, because the mean of its divisors is an integer number (447383475).

Almost surely, 2^6617667901 is an apocalyptic number.

It is an amenable number.

6617667901 is a deficient number, since it is larger than the sum of its proper divisors (540467699).

6617667901 is a wasteful number, since it uses less digits than its factorization.

6617667901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 6617667901 is about 81349.0497854769. The cubic root of 6617667901 is about 1877.4497544536.

The spelling of 6617667901 in words is "six billion, six hundred seventeen million, six hundred sixty-seven thousand, nine hundred one".