671102580 has 96 divisors (see below), whose sum is σ = 1930884480. Its totient is φ = 174092800.

The previous prime is 671102561. The next prime is 671102587. The reversal of 671102580 is 85201176.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671102587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356602 + ... + 358478.

It is an arithmetic number, because the mean of its divisors is an integer number (20113380).

Almost surely, 2^671102580 is an apocalyptic number.

671102580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671102580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965442240).

671102580 is an abundant number, since it is smaller than the sum of its proper divisors (1259781900).

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

671102580 is a wasteful number, since it uses less digits than its factorization.

671102580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 671102580 is about 25905.6476467970. The cubic root of 671102580 is about 875.5137467355.

The spelling of 671102580 in words is "six hundred seventy-one million, one hundred two thousand, five hundred eighty".