63745020 has 36 divisors (see below), whose sum is σ = 193360440. Its totient is φ = 16998624.

The previous prime is 63745013. The next prime is 63745027. The reversal of 63745020 is 2054736.

It is a happy number.

63745020 is a `hidden beast` number, since 637 + 4 + 5 + 0 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (63745013) and next prime (63745027).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63745027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176890 + ... + 177249.

Almost surely, 2^63745020 is an apocalyptic number.

63745020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63745020 is an abundant number, since it is smaller than the sum of its proper divisors (129615420).

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

63745020 is a wasteful number, since it uses less digits than its factorization.

63745020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354154 (or 354149 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 63745020 is about 7984.0478455480. The cubic root of 63745020 is about 399.4680846453.

Adding to 63745020 its reverse (2054736), we get a palindrome (65799756).

The spelling of 63745020 in words is "sixty-three million, seven hundred forty-five thousand, twenty".