407643 has 8 divisors (see below), whose sum is σ = 575568. Its totient is φ = 255744.

The previous prime is 407639. The next prime is 407651. The reversal of 407643 is 346704.

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

It is not a de Polignac number, because 407643 - 2² = 407639 is a prime.

407643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (407633) 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, 3946 + ... + 4047.

It is an arithmetic number, because the mean of its divisors is an integer number (71946).

2⁴⁰⁷⁶⁴³ is an apocalyptic number.

407643 is a deficient number, since it is larger than the sum of its proper divisors (167925).

407643 is a wasteful number, since it uses less digits than its factorization.

407643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8013.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 407643 is about 638.4692631599. The cubic root of 407643 is about 74.1469565658.

The spelling of 407643 in words is "four hundred seven thousand, six hundred forty-three".