3581407 has 4 divisors (see below), whose sum is σ = 3792096. Its totient is φ = 3370720.

The previous prime is 3581393. The next prime is 3581419. The reversal of 3581407 is 7041853.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3581407 - 2¹⁵ = 3548639 is a prime.

It is a Duffinian number.

3581407 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581467) 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, 105319 + ... + 105352.

It is an arithmetic number, because the mean of its divisors is an integer number (948024).

Almost surely, 2^3581407 is an apocalyptic number.

3581407 is a deficient number, since it is larger than the sum of its proper divisors (210689).

3581407 is a wasteful number, since it uses less digits than its factorization.

3581407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210688.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 3581407 is about 1892.4605676209. The cubic root of 3581407 is about 152.9975792403.

The spelling of 3581407 in words is "three million, five hundred eighty-one thousand, four hundred seven".