431646 has 8 divisors (see below), whose sum is σ = 863304. Its totient is φ = 143880.

The previous prime is 431621. The next prime is 431657. The reversal of 431646 is 646134.

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

431646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35965 + ... + 35976.

It is an arithmetic number, because the mean of its divisors is an integer number (107913).

2⁴³¹⁶⁴⁶ is an apocalyptic number.

431646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431646 is a wasteful number, since it uses less digits than its factorization.

431646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71946.

The product of its digits is 1728, while the sum is 24.

The square root of 431646 is about 656.9977168910. The cubic root of 431646 is about 75.5746086449.

The spelling of 431646 in words is "four hundred thirty-one thousand, six hundred forty-six".