63435780 has 36 divisors (see below), whose sum is σ = 192422412. Its totient is φ = 16916160.

The previous prime is 63435767. The next prime is 63435803. The reversal of 63435780 is 8753436.

It is a happy number.

63435780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41757444 + 21678336 = 6462^2 + 4656^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176031 + ... + 176390.

It is an arithmetic number, because the mean of its divisors is an integer number (5345067).

Almost surely, 2^63435780 is an apocalyptic number.

63435780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63435780 is an abundant number, since it is smaller than the sum of its proper divisors (128986632).

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

63435780 is a wasteful number, since it uses less digits than its factorization.

63435780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352436 (or 352431 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 63435780 is about 7964.6581847560. The cubic root of 63435780 is about 398.8210703928.

The spelling of 63435780 in words is "sixty-three million, four hundred thirty-five thousand, seven hundred eighty".