63976 has 16 divisors (see below), whose sum is σ = 131040. Its totient is φ = 29040.

The previous prime is 63949. The next prime is 63977. The reversal of 63976 is 67936.

63976 = T₆₅ + T₆₆ + ... + T₈₆.

It is not an unprimeable number, because it can be changed into a prime (63977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276 + ... + 451.

It is an arithmetic number, because the mean of its divisors is an integer number (8190).

2⁶³⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

63976 is an abundant number, since it is smaller than the sum of its proper divisors (67064).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65520).

63976 is a wasteful number, since it uses less digits than its factorization.

63976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 740 counting only the distinct ones).

The product of its digits is 6804, while the sum is 31.

The square root of 63976 is about 252.9347742008. The cubic root of 63976 is about 39.9949993749.

The spelling of 63976 in words is "sixty-three thousand, nine hundred seventy-six".