1671220716 has 24 divisors (see below), whose sum is σ = 4254016704. Its totient is φ = 506430480.

The previous prime is 1671220669. The next prime is 1671220723. The reversal of 1671220716 is 6170221761.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 6330250 + ... + 6330513.

It is an arithmetic number, because the mean of its divisors is an integer number (177250696).

Almost surely, 2^1671220716 is an apocalyptic number.

It is an amenable number.

1671220716 is an abundant number, since it is smaller than the sum of its proper divisors (2582795988).

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

1671220716 is a wasteful number, since it uses less digits than its factorization.

1671220716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12660781 (or 12660779 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 1671220716 is about 40880.5664833549. The cubic root of 1671220716 is about 1186.7100039231.

The spelling of 1671220716 in words is "one billion, six hundred seventy-one million, two hundred twenty thousand, seven hundred sixteen".