63561120 has 96 divisors (see below), whose sum is σ = 228832128. Its totient is φ = 14527488.

The previous prime is 63561107. The next prime is 63561131. The reversal of 63561120 is 2116536.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6099 + ... + 12818.

It is an arithmetic number, because the mean of its divisors is an integer number (2383668).

Almost surely, 2^63561120 is an apocalyptic number.

63561120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63561120 is an abundant number, since it is smaller than the sum of its proper divisors (165271008).

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

63561120 is a wasteful number, since it uses less digits than its factorization.

63561120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18942 (or 18934 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 63561120 is about 7972.5228127613. The cubic root of 63561120 is about 399.0835686541.

Adding to 63561120 its reverse (2116536), we get a palindrome (65677656).

The spelling of 63561120 in words is "sixty-three million, five hundred sixty-one thousand, one hundred twenty".