673643214 has 48 divisors (see below), whose sum is σ = 1540266000. Its totient is φ = 212191488.

The previous prime is 673643213. The next prime is 673643227. The reversal of 673643214 is 412346376.

It is a happy number.

673643214 is a `hidden beast` number, since 6 + 7 + 3 + 643 + 2 + 1 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673643213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145812 + ... + 150360.

It is an arithmetic number, because the mean of its divisors is an integer number (32088875).

Almost surely, 2^673643214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673643214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770133000).

673643214 is an abundant number, since it is smaller than the sum of its proper divisors (866622786).

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

673643214 is a wasteful number, since it uses less digits than its factorization.

673643214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009 (or 5006 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 673643214 is about 25954.6376202790. The cubic root of 673643214 is about 876.6171840650.

The spelling of 673643214 in words is "six hundred seventy-three million, six hundred forty-three thousand, two hundred fourteen".