61871960 has 16 divisors (see below), whose sum is σ = 139212000. Its totient is φ = 24748768.

The previous prime is 61871947. The next prime is 61871977. The reversal of 61871960 is 6917816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773360 + ... + 773439.

It is an arithmetic number, because the mean of its divisors is an integer number (8700750).

Almost surely, 2^61871960 is an apocalyptic number.

It is an amenable number.

61871960 is an abundant number, since it is smaller than the sum of its proper divisors (77340040).

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

61871960 is a wasteful number, since it uses less digits than its factorization.

61871960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546810 (or 1546806 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 61871960 is about 7865.8731238179. The cubic root of 61871960 is about 395.5165170458.

The spelling of 61871960 in words is "sixty-one million, eight hundred seventy-one thousand, nine hundred sixty".