63996940 has 96 divisors (see below), whose sum is σ = 165312000. Its totient is φ = 20744640.

The previous prime is 63996931. The next prime is 63996953. The reversal of 63996940 is 4969936.

63996940 = T₂₄₅ + T₂₄₆ + ... + T₇₃₅.

63996940 is a Rhonda number in base 12.

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, 130095 + ... + 130585.

It is an arithmetic number, because the mean of its divisors is an integer number (1722000).

Almost surely, 2^63996940 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 63996940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82656000).

63996940 is an abundant number, since it is smaller than the sum of its proper divisors (101315060).

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

63996940 is a wasteful number, since it uses less digits than its factorization.

63996940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 63996940 is about 7999.8087477139. The cubic root of 63996940 is about 399.9936248984.

It can be divided in two parts, 639 and 96940, that added together give a palindrome (97579).

The spelling of 63996940 in words is "sixty-three million, nine hundred ninety-six thousand, nine hundred forty".