6604090901 has 4 divisors (see below), whose sum is σ = 6891225312. Its totient is φ = 6316956492.

The previous prime is 6604090897. The next prime is 6604090903. The reversal of 6604090901 is 1090904066.

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 6604090901 - 2² = 6604090897 is a prime.

It is a super-2 number, since 2×6604090901² = 87228033257341983602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6604090903) 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, 143567171 + ... + 143567216.

It is an arithmetic number, because the mean of its divisors is an integer number (1722806328).

Almost surely, 2^6604090901 is an apocalyptic number.

It is an amenable number.

6604090901 is a deficient number, since it is larger than the sum of its proper divisors (287134411).

6604090901 is a wasteful number, since it uses less digits than its factorization.

6604090901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287134410.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 6604090901 is about 81265.5579012413. The cubic root of 6604090901 is about 1876.1649318799.

Adding to 6604090901 its reverse (1090904066), we get a palindrome (7694994967).

The spelling of 6604090901 in words is "six billion, six hundred four million, ninety thousand, nine hundred one".