671244444 has 36 divisors (see below), whose sum is σ = 1827277816. Its totient is φ = 206536608.

The previous prime is 671244421. The next prime is 671244461. The reversal of 671244444 is 444442176.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×671244444³ (a number of 27 digits) contains 333 as substring.

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

671244444 is a modest number, since divided by 44444 gives 6712 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 671244399 and 671244408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 716674 + ... + 717609.

Almost surely, 2^671244444 is an apocalyptic number.

It is an amenable number.

671244444 is an abundant number, since it is smaller than the sum of its proper divisors (1156033372).

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

671244444 is a wasteful number, since it uses less digits than its factorization.

671244444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434306 (or 1434301 counting only the distinct ones).

The product of its digits is 86016, while the sum is 36.

The square root of 671244444 is about 25908.3855923135. The cubic root of 671244444 is about 875.5754338432.

The spelling of 671244444 in words is "six hundred seventy-one million, two hundred forty-four thousand, four hundred forty-four".