671458368 has 168 divisors, whose sum is σ = 2084832000. Its totient is φ = 190159872.

The previous prime is 671458327. The next prime is 671458369. The reversal of 671458368 is 863854176.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (967680) is a multiple of the sum of its prime divisors (640).

It is not an unprimeable number, because it can be changed into a prime (671458369) 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, 1401553 + ... + 1402031.

Almost surely, 2^671458368 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 671458368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042416000).

671458368 is an abundant number, since it is smaller than the sum of its proper divisors (1413373632).

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

671458368 is a wasteful number, since it uses less digits than its factorization.

671458368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 640 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 671458368 is about 25912.5137337156. The cubic root of 671458368 is about 875.6684385632.

The spelling of 671458368 in words is "six hundred seventy-one million, four hundred fifty-eight thousand, three hundred sixty-eight".