671550912 has 168 divisors, whose sum is σ = 2066391600. Its totient is φ = 215986176.

The previous prime is 671550911. The next prime is 671550917. The reversal of 671550912 is 219055176.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671550911) 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, 450264 + ... + 451752.

It is an arithmetic number, because the mean of its divisors is an integer number (12299950).

Almost surely, 2^671550912 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 671550912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033195800).

671550912 is an abundant number, since it is smaller than the sum of its proper divisors (1394840688).

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

671550912 is a wasteful number, since it uses less digits than its factorization.

671550912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1523 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 671550912 is about 25914.2993731260. The cubic root of 671550912 is about 875.7086664915.

The spelling of 671550912 in words is "six hundred seventy-one million, five hundred fifty thousand, nine hundred twelve".