63061320 has 128 divisors (see below), whose sum is σ = 222163200. Its totient is φ = 14017536.

The previous prime is 63061307. The next prime is 63061337. The reversal of 63061320 is 2316036.

It is a super-3 number, since 3×63061320³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30066 + ... + 32094.

It is an arithmetic number, because the mean of its divisors is an integer number (1735650).

Almost surely, 2^63061320 is an apocalyptic number.

63061320 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 63061320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111081600).

63061320 is an abundant number, since it is smaller than the sum of its proper divisors (159101880).

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

63061320 is a wasteful number, since it uses less digits than its factorization.

63061320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087 (or 2083 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 63061320 is about 7941.1157906178. The cubic root of 63061320 is about 398.0347772276.

Adding to 63061320 its reverse (2316036), we get a palindrome (65377356).

It can be divided in two parts, 6306 and 1320, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 63061320 in words is "sixty-three million, sixty-one thousand, three hundred twenty".