6620161004 has 12 divisors (see below), whose sum is σ = 11676505344. Its totient is φ = 3284016624.

The previous prime is 6620160997. The next prime is 6620161007. The reversal of 6620161004 is 4001610266.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6620161007) 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, 6515399 + ... + 6516414.

It is an arithmetic number, because the mean of its divisors is an integer number (973042112).

Almost surely, 2^6620161004 is an apocalyptic number.

It is an amenable number.

6620161004 is a deficient number, since it is larger than the sum of its proper divisors (5056344340).

6620161004 is a wasteful number, since it uses less digits than its factorization.

6620161004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031944 (or 13031942 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 6620161004 is about 81364.3718343600. The cubic root of 6620161004 is about 1877.6854914745.

The spelling of 6620161004 in words is "six billion, six hundred twenty million, one hundred sixty-one thousand, four".