646454 has 8 divisors (see below), whose sum is σ = 974160. Its totient is φ = 321736.

The previous prime is 646453. The next prime is 646519. The reversal of 646454 is 454646.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 646454.

It is not an unprimeable number, because it can be changed into a prime (646453) 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, 89 + ... + 1140.

It is an arithmetic number, because the mean of its divisors is an integer number (121770).

2⁶⁴⁶⁴⁵⁴ is an apocalyptic number.

646454 is a deficient number, since it is larger than the sum of its proper divisors (327706).

646454 is a wasteful number, since it uses less digits than its factorization.

646454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494.

The product of its digits is 11520, while the sum is 29.

The square root of 646454 is about 804.0236314935. The cubic root of 646454 is about 86.4661009650.

The spelling of 646454 in words is "six hundred forty-six thousand, four hundred fifty-four".