3661493 has 8 divisors (see below), whose sum is σ = 4087776. Its totient is φ = 3250800.

The previous prime is 3661457. The next prime is 3661499. The reversal of 3661493 is 3941663.

It is a happy number.

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

It is not a de Polignac number, because 3661493 - 2⁶ = 3661429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661499) 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, 3398 + ... + 4343.

It is an arithmetic number, because the mean of its divisors is an integer number (510972).

Almost surely, 2^3661493 is an apocalyptic number.

It is an amenable number.

3661493 is a deficient number, since it is larger than the sum of its proper divisors (426283).

3661493 is a wasteful number, since it uses less digits than its factorization.

3661493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7795.

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

The square root of 3661493 is about 1913.5028089867. The cubic root of 3661493 is about 154.1296064152.

The spelling of 3661493 in words is "three million, six hundred sixty-one thousand, four hundred ninety-three".