646414 has 4 divisors (see below), whose sum is σ = 969624. Its totient is φ = 323206.

The previous prime is 646411. The next prime is 646421. The reversal of 646414 is 414646.

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 (646411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161602 + ... + 161605.

It is an arithmetic number, because the mean of its divisors is an integer number (242406).

2⁶⁴⁶⁴¹⁴ is an apocalyptic number.

646414 is a deficient number, since it is larger than the sum of its proper divisors (323210).

646414 is a wasteful number, since it uses less digits than its factorization.

646414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323209.

The product of its digits is 2304, while the sum is 25.

The square root of 646414 is about 803.9987562179. The cubic root of 646414 is about 86.4643175355.

The spelling of 646414 in words is "six hundred forty-six thousand, four hundred fourteen".