6601904040 has 32 divisors (see below), whose sum is σ = 19805712480. Its totient is φ = 1760507712.

The previous prime is 6601904039. The next prime is 6601904051. The reversal of 6601904040 is 404091066.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6601903989 and 6601904007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27507814 + ... + 27508053.

It is an arithmetic number, because the mean of its divisors is an integer number (618928515).

Almost surely, 2^6601904040 is an apocalyptic number.

6601904040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6601904040 is an abundant number, since it is smaller than the sum of its proper divisors (13203808440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6601904040 is a wasteful number, since it uses less digits than its factorization.

6601904040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55015881 (or 55015877 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 6601904040 is about 81252.1017574315. The cubic root of 6601904040 is about 1875.9578196047.

The spelling of 6601904040 in words is "six billion, six hundred one million, nine hundred four thousand, forty".