5966977681 has 16 divisors (see below), whose sum is σ = 7211086848. Its totient is φ = 4828838400.

The previous prime is 5966977657. The next prime is 5966977691. The reversal of 5966977681 is 1867796695.

It is a cyclic number.

It is not a de Polignac number, because 5966977681 - 2⁵ = 5966977649 is a prime.

It is a super-2 number, since 2×5966977681² = 71209645291104275522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5966977631) 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, 326440 + ... + 344233.

It is an arithmetic number, because the mean of its divisors is an integer number (450692928).

Almost surely, 2^5966977681 is an apocalyptic number.

It is an amenable number.

5966977681 is a deficient number, since it is larger than the sum of its proper divisors (1244109167).

5966977681 is a wasteful number, since it uses less digits than its factorization.

5966977681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670752.

The product of its digits is 34292160, while the sum is 64.

The square root of 5966977681 is about 77246.2146710115. The cubic root of 5966977681 is about 1813.7808173728.

The spelling of 5966977681 in words is "five billion, nine hundred sixty-six million, nine hundred seventy-seven thousand, six hundred eighty-one".