407641 has 4 divisors (see below), whose sum is σ = 439012. Its totient is φ = 376272.

The previous prime is 407639. The next prime is 407651. The reversal of 407641 is 146704.

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

It can be written as a sum of positive squares in 2 ways, for example, as 177241 + 230400 = 421^2 + 480^2 .

It is not a de Polignac number, because 407641 - 2¹ = 407639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (407621) 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, 15666 + ... + 15691.

It is an arithmetic number, because the mean of its divisors is an integer number (109753).

2⁴⁰⁷⁶⁴¹ is an apocalyptic number.

It is an amenable number.

407641 is a deficient number, since it is larger than the sum of its proper divisors (31371).

407641 is a wasteful number, since it uses less digits than its factorization.

407641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31370.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 407641 is about 638.4676969119. The cubic root of 407641 is about 74.1468353043.

The spelling of 407641 in words is "four hundred seven thousand, six hundred forty-one".