3661431 has 8 divisors (see below), whose sum is σ = 4890864. Its totient is φ = 2436480.

The previous prime is 3661429. The next prime is 3661447. The reversal of 3661431 is 1341663.

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

It is not a de Polignac number, because 3661431 - 2¹ = 3661429 is a prime.

It is a super-2 number, since 2×3661431² = 26812153935522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2175 + ... + 3471.

It is an arithmetic number, because the mean of its divisors is an integer number (611358).

Almost surely, 2^3661431 is an apocalyptic number.

3661431 is a deficient number, since it is larger than the sum of its proper divisors (1229433).

3661431 is a wasteful number, since it uses less digits than its factorization.

3661431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241.

The product of its digits is 1296, while the sum is 24.

The square root of 3661431 is about 1913.4866082625. The cubic root of 3661431 is about 154.1287364523.

The spelling of 3661431 in words is "three million, six hundred sixty-one thousand, four hundred thirty-one".