671954000 has 80 divisors (see below), whose sum is σ = 1710396480. Its totient is φ = 254620800.

The previous prime is 671953969. The next prime is 671954021. The reversal of 671954000 is 459176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 29159 + ... + 46841.

It is an arithmetic number, because the mean of its divisors is an integer number (21379956).

Almost surely, 2^671954000 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 671954000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855198240).

671954000 is an abundant number, since it is smaller than the sum of its proper divisors (1038442480).

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

671954000 is a wasteful number, since it uses less digits than its factorization.

671954000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17725 (or 17709 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 671954000 is about 25922.0755341851. The cubic root of 671954000 is about 875.8838416207.

The spelling of 671954000 in words is "six hundred seventy-one million, nine hundred fifty-four thousand".