671122540 has 48 divisors (see below), whose sum is σ = 1539336960. Its totient is φ = 243750080.

The previous prime is 671122537. The next prime is 671122547. The reversal of 671122540 is 45221176.

It is a junction number, because it is equal to n+sod(n) for n = 671122499 and 671122508.

It is not an unprimeable number, because it can be changed into a prime (671122547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275769 + ... + 278191.

It is an arithmetic number, because the mean of its divisors is an integer number (32069520).

Almost surely, 2^671122540 is an apocalyptic number.

It is an amenable number.

671122540 is an abundant number, since it is smaller than the sum of its proper divisors (868214420).

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

671122540 is a wasteful number, since it uses less digits than its factorization.

671122540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702 (or 3700 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 671122540 is about 25906.0328881131. The cubic root of 671122540 is about 875.5224265219.

The spelling of 671122540 in words is "six hundred seventy-one million, one hundred twenty-two thousand, five hundred forty".