671346216 has 24 divisors (see below), whose sum is σ = 1818229530. Its totient is φ = 223782048.

The previous prime is 671346211. The next prime is 671346217. The reversal of 671346216 is 612643176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 617323716 + 54022500 = 24846^2 + 7350^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (671346211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4662055 + ... + 4662198.

Almost surely, 2^671346216 is an apocalyptic number.

It is an amenable number.

671346216 is an abundant number, since it is smaller than the sum of its proper divisors (1146883314).

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

671346216 is a wasteful number, since it uses less digits than its factorization.

671346216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9324265 (or 9324258 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 671346216 is about 25910.3495923926. The cubic root of 671346216 is about 875.6196822839.

The spelling of 671346216 in words is "six hundred seventy-one million, three hundred forty-six thousand, two hundred sixteen".