671510616 has 128 divisors (see below), whose sum is σ = 2048716800. Its totient is φ = 179141760.

The previous prime is 671510603. The next prime is 671510621. The reversal of 671510616 is 616015176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225151 + ... + 228113.

It is an arithmetic number, because the mean of its divisors is an integer number (16005600).

Almost surely, 2^671510616 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 671510616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1024358400).

671510616 is an abundant number, since it is smaller than the sum of its proper divisors (1377206184).

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

671510616 is a wasteful number, since it uses less digits than its factorization.

671510616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069 (or 3065 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 671510616 is about 25913.5218756540. The cubic root of 671510616 is about 875.6911506876.

The spelling of 671510616 in words is "six hundred seventy-one million, five hundred ten thousand, six hundred sixteen".