6607995681 has 16 divisors (see below), whose sum is σ = 10394144768. Its totient is φ = 3654190800.

The previous prime is 6607995677. The next prime is 6607995701. The reversal of 6607995681 is 1865997066.

It is a happy number.

It is not a de Polignac number, because 6607995681 - 2² = 6607995677 is a prime.

It is a super-2 number, since 2×6607995681² = 87331213840229307522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6607995661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5074615 + ... + 5075916.

It is an arithmetic number, because the mean of its divisors is an integer number (649634048).

Almost surely, 2^6607995681 is an apocalyptic number.

It is an amenable number.

6607995681 is a deficient number, since it is larger than the sum of its proper divisors (3786149087).

6607995681 is a wasteful number, since it uses less digits than its factorization.

6607995681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10150572.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 6607995681 is about 81289.5791660899. The cubic root of 6607995681 is about 1876.5346304002.

The spelling of 6607995681 in words is "six billion, six hundred seven million, nine hundred ninety-five thousand, six hundred eighty-one".