63520860 has 192 divisors, whose sum is σ = 205922304. Its totient is φ = 14515200.

The previous prime is 63520843. The next prime is 63520861. The reversal of 63520860 is 6802536.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63520861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 894625 + ... + 894695.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512).

Almost surely, 2^63520860 is an apocalyptic number.

63520860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63520860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102961152).

63520860 is an abundant number, since it is smaller than the sum of its proper divisors (142401444).

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

63520860 is a wasteful number, since it uses less digits than its factorization.

63520860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 63520860 is about 7969.9974905893. The cubic root of 63520860 is about 398.9992902042. Note that the first 3 decimals are identical.

The spelling of 63520860 in words is "sixty-three million, five hundred twenty thousand, eight hundred sixty".