63953940 has 24 divisors (see below), whose sum is σ = 179071200. Its totient is φ = 17054368.

The previous prime is 63953917. The next prime is 63953941. The reversal of 63953940 is 4935936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63953941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532890 + ... + 533009.

It is an arithmetic number, because the mean of its divisors is an integer number (7461300).

Almost surely, 2^63953940 is an apocalyptic number.

63953940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63953940 is an abundant number, since it is smaller than the sum of its proper divisors (115117260).

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

63953940 is a wasteful number, since it uses less digits than its factorization.

63953940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065911 (or 1065909 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 63953940 is about 7997.1207318634. The cubic root of 63953940 is about 399.9040186375.

The spelling of 63953940 in words is "sixty-three million, nine hundred fifty-three thousand, nine hundred forty".