418641 has 4 divisors (see below), whose sum is σ = 558192. Its totient is φ = 279092.

The previous prime is 418637. The next prime is 418657. The reversal of 418641 is 146814.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 418641 - 2² = 418637 is a prime.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (418601) 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, 69771 + ... + 69776.

It is an arithmetic number, because the mean of its divisors is an integer number (139548).

2⁴¹⁸⁶⁴¹ is an apocalyptic number.

It is an amenable number.

418641 is a deficient number, since it is larger than the sum of its proper divisors (139551).

418641 is a wasteful number, since it uses less digits than its factorization.

418641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139550.

The product of its digits is 768, while the sum is 24.

The square root of 418641 is about 647.0247290483. The cubic root of 418641 is about 74.8078637581.

The spelling of 418641 in words is "four hundred eighteen thousand, six hundred forty-one".