435646 has 4 divisors (see below), whose sum is σ = 653472. Its totient is φ = 217822.

The previous prime is 435641. The next prime is 435647. The reversal of 435646 is 646534.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (435641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108910 + ... + 108913.

It is an arithmetic number, because the mean of its divisors is an integer number (163368).

2⁴³⁵⁶⁴⁶ is an apocalyptic number.

435646 is a deficient number, since it is larger than the sum of its proper divisors (217826).

435646 is a wasteful number, since it uses less digits than its factorization.

435646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217825.

The product of its digits is 8640, while the sum is 28.

The square root of 435646 is about 660.0348475649. The cubic root of 435646 is about 75.8073374917.

It can be divided in two parts, 435 and 646, that added together give a triangular number (1081 = T₄₆).

The spelling of 435646 in words is "four hundred thirty-five thousand, six hundred forty-six".