674649216 has 128 divisors (see below), whose sum is σ = 2108462400. Its totient is φ = 211636224.

The previous prime is 674649191. The next prime is 674649229. The reversal of 674649216 is 612946476.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53011 + ... + 64493.

Almost surely, 2^674649216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674649216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054231200).

674649216 is an abundant number, since it is smaller than the sum of its proper divisors (1433813184).

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

674649216 is a wasteful number, since it uses less digits than its factorization.

674649216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11523 (or 11505 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 674649216 is about 25974.0103950083. The cubic root of 674649216 is about 877.0533397797.

The spelling of 674649216 in words is "six hundred seventy-four million, six hundred forty-nine thousand, two hundred sixteen".