671001144 has 96 divisors (see below), whose sum is σ = 1853754000. Its totient is φ = 202245120.

The previous prime is 671001139. The next prime is 671001151. The reversal of 671001144 is 441100176.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664512 + ... + 665520.

Almost surely, 2^671001144 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 671001144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926877000).

671001144 is an abundant number, since it is smaller than the sum of its proper divisors (1182752856).

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

671001144 is a wasteful number, since it uses less digits than its factorization.

671001144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 671001144 is about 25903.6897757829. The cubic root of 671001144 is about 875.4696337142.

The spelling of 671001144 in words is "six hundred seventy-one million, one thousand, one hundred forty-four".