3661001663 has 8 divisors (see below), whose sum is σ = 4228750800. Its totient is φ = 3132407680.

The previous prime is 3661001657. The next prime is 3661001671.

3661001663 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3661001663 - 2¹⁰ = 3661000639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661001623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9788588 + ... + 9788961.

It is an arithmetic number, because the mean of its divisors is an integer number (528593850).

Almost surely, 2^3661001663 is an apocalyptic number.

3661001663 is a deficient number, since it is larger than the sum of its proper divisors (567749137).

3661001663 is a wasteful number, since it uses less digits than its factorization.

3661001663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19577577.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 3661001663 is about 60506.2117720156. The cubic root of 3661001663 is about 1541.2271187190.

It can be divided in two parts, 366100 and 1663, that added together give a palindrome (367763).

The spelling of 3661001663 in words is "three billion, six hundred sixty-one million, one thousand, six hundred sixty-three".