671555060 has 48 divisors (see below), whose sum is σ = 1553755392. Its totient is φ = 241776000.

The previous prime is 671555041. The next prime is 671555083. The reversal of 671555060 is 60555176.

It is a super-2 number, since 2×671555060² = 901972397223207200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 671555060.

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, 7109 + ... + 37331.

It is an arithmetic number, because the mean of its divisors is an integer number (32369904).

Almost surely, 2^671555060 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 671555060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776877696).

671555060 is an abundant number, since it is smaller than the sum of its proper divisors (882200332).

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

671555060 is a wasteful number, since it uses less digits than its factorization.

671555060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30344 (or 30342 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 671555060 is about 25914.3794060363. The cubic root of 671555060 is about 875.7104694980.

The spelling of 671555060 in words is "six hundred seventy-one million, five hundred fifty-five thousand, sixty".