63956940 has 24 divisors (see below), whose sum is σ = 179079600. Its totient is φ = 17055168.

The previous prime is 63956939. The next prime is 63956957. The reversal of 63956940 is 4965936.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 63956892 and 63956901.

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, 532915 + ... + 533034.

It is an arithmetic number, because the mean of its divisors is an integer number (7461650).

Almost surely, 2^63956940 is an apocalyptic number.

63956940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63956940 is an abundant number, since it is smaller than the sum of its proper divisors (115122660).

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

63956940 is a wasteful number, since it uses less digits than its factorization.

63956940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065961 (or 1065959 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 63956940 is about 7997.3082971710. The cubic root of 63956940 is about 399.9102715402.

The spelling of 63956940 in words is "sixty-three million, nine hundred fifty-six thousand, nine hundred forty".