3666210601 has 4 divisors (see below), whose sum is σ = 3765297412. Its totient is φ = 3567123792.

The previous prime is 3666210563. The next prime is 3666210623. The reversal of 3666210601 is 1060126663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1060126663 = 11527 ⋅91969.

It can be written as a sum of positive squares in 2 ways, for example, as 2448270400 + 1217940201 = 49480^2 + 34899^2 .

It is a cyclic number.

It is not a de Polignac number, because 3666210601 - 2¹³ = 3666202409 is a prime.

It is a super-2 number, since 2×3666210601² = 26882200341769562402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666210901) 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, 49543350 + ... + 49543423.

It is an arithmetic number, because the mean of its divisors is an integer number (941324353).

Almost surely, 2^3666210601 is an apocalyptic number.

It is an amenable number.

3666210601 is a deficient number, since it is larger than the sum of its proper divisors (99086811).

3666210601 is an equidigital number, since it uses as much as digits as its factorization.

3666210601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99086810.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 3666210601 is about 60549.2411265410. The cubic root of 3666210601 is about 1541.9577340639.

The spelling of 3666210601 in words is "three billion, six hundred sixty-six million, two hundred ten thousand, six hundred one".