3601391 has 4 divisors (see below), whose sum is σ = 3605784. Its totient is φ = 3597000.

The previous prime is 3601369. The next prime is 3601421. The reversal of 3601391 is 1931063.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1931063 = 1031 ⋅1873.

It is a cyclic number.

It is not a de Polignac number, because 3601391 - 2⁶ = 3601327 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 (3601361) 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 3 ways as a sum of consecutive naturals, for example, 560 + ... + 2741.

It is an arithmetic number, because the mean of its divisors is an integer number (901446).

Almost surely, 2^3601391 is an apocalyptic number.

3601391 is a deficient number, since it is larger than the sum of its proper divisors (4393).

3601391 is a wasteful number, since it uses less digits than its factorization.

3601391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 3601391 is about 1897.7331213846. The cubic root of 3601391 is about 153.2816235002.

The spelling of 3601391 in words is "three million, six hundred one thousand, three hundred ninety-one".