63712020 has 24 divisors (see below), whose sum is σ = 178393824. Its totient is φ = 16989856.

The previous prime is 63711983. The next prime is 63712057. The reversal of 63712020 is 2021736.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63711983) and next prime (63712057).

It is a congruent number.

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, 530874 + ... + 530993.

It is an arithmetic number, because the mean of its divisors is an integer number (7433076).

Almost surely, 2^63712020 is an apocalyptic number.

63712020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63712020 is an abundant number, since it is smaller than the sum of its proper divisors (114681804).

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

63712020 is a wasteful number, since it uses less digits than its factorization.

63712020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061879 (or 1061877 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 63712020 is about 7981.9809571309. The cubic root of 63712020 is about 399.3991395354.

Adding to 63712020 its reverse (2021736), we get a palindrome (65733756).

The spelling of 63712020 in words is "sixty-three million, seven hundred twelve thousand, twenty".