6626901601 has 4 divisors (see below), whose sum is σ = 6627092400. Its totient is φ = 6626710804.

The previous prime is 6626901599. The next prime is 6626901623. The reversal of 6626901601 is 1061096266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6626901601 - 2¹ = 6626901599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6626901691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26911 + ... + 118228.

It is an arithmetic number, because the mean of its divisors is an integer number (1656773100).

Almost surely, 2^6626901601 is an apocalyptic number.

It is an amenable number.

6626901601 is a deficient number, since it is larger than the sum of its proper divisors (190799).

6626901601 is a wasteful number, since it uses less digits than its factorization.

6626901601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190798.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 6626901601 is about 81405.7835844604. The cubic root of 6626901601 is about 1878.3225569453.

Adding to 6626901601 its reverse (1061096266), we get a palindrome (7687997867).

The spelling of 6626901601 in words is "six billion, six hundred twenty-six million, nine hundred one thousand, six hundred one".