3600666401 has 2 divisors, whose sum is σ = 3600666402. Its totient is φ = 3600666400.

The previous prime is 3600666397. The next prime is 3600666403. The reversal of 3600666401 is 1046660063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3597600400 + 3066001 = 59980^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 3600666401 - 2² = 3600666397 is a prime.

Together with 3600666403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3600666403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800333200 + 1800333201.

It is an arithmetic number, because the mean of its divisors is an integer number (1800333201).

Almost surely, 2^3600666401 is an apocalyptic number.

It is an amenable number.

3600666401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3600666401 is an equidigital number, since it uses as much as digits as its factorization.

3600666401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 3600666401 is about 60005.5530846938. The cubic root of 3600666401 is about 1532.7134273547.

The spelling of 3600666401 in words is "three billion, six hundred million, six hundred sixty-six thousand, four hundred one".