63071980 has 48 divisors (see below), whose sum is σ = 142700544. Its totient is φ = 23348160.

The previous prime is 63071971. The next prime is 63071993. The reversal of 63071980 is 8917036.

It is a super-2 number, since 2×63071980² = 7956149322240800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12049 + ... + 16471.

It is an arithmetic number, because the mean of its divisors is an integer number (2972928).

Almost surely, 2^63071980 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 63071980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71350272).

63071980 is an abundant number, since it is smaller than the sum of its proper divisors (79628564).

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

63071980 is a wasteful number, since it uses less digits than its factorization.

63071980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 4484 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 63071980 is about 7941.7869525693. The cubic root of 63071980 is about 398.0572041377.

The spelling of 63071980 in words is "sixty-three million, seventy-one thousand, nine hundred eighty".