63456780 has 24 divisors (see below), whose sum is σ = 177679152. Its totient is φ = 16921792.

The previous prime is 63456761. The next prime is 63456787. The reversal of 63456780 is 8765436.

It is not an unprimeable number, because it can be changed into a prime (63456787) 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, 528747 + ... + 528866.

It is an arithmetic number, because the mean of its divisors is an integer number (7403298).

Almost surely, 2^63456780 is an apocalyptic number.

63456780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63456780 is an abundant number, since it is smaller than the sum of its proper divisors (114222372).

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

63456780 is a wasteful number, since it uses less digits than its factorization.

63456780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057625 (or 1057623 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 63456780 is about 7965.9763996638. The cubic root of 63456780 is about 398.8650745729.

The spelling of 63456780 in words is "sixty-three million, four hundred fifty-six thousand, seven hundred eighty".