671578548 has 24 divisors (see below), whose sum is σ = 1568480928. Its totient is φ = 223650336.

The previous prime is 671578519. The next prime is 671578559. The reversal of 671578548 is 845875176.

It is a happy number.

It is a super-2 number, since 2×671578548² = 902035492267576608, 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 671578548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12486 + ... + 38717.

It is an arithmetic number, because the mean of its divisors is an integer number (65353372).

Almost surely, 2^671578548 is an apocalyptic number.

It is an amenable number.

671578548 is an abundant number, since it is smaller than the sum of its proper divisors (896902380).

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

671578548 is a wasteful number, since it uses less digits than its factorization.

671578548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52303 (or 52301 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 51.

The square root of 671578548 is about 25914.8325867639. The cubic root of 671578548 is about 875.7206788608.

The spelling of 671578548 in words is "six hundred seventy-one million, five hundred seventy-eight thousand, five hundred forty-eight".