63120540 has 48 divisors (see below), whose sum is σ = 201987072. Its totient is φ = 14427456.

The previous prime is 63120529. The next prime is 63120571. The reversal of 63120540 is 4502136.

It is a happy number.

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

It is a congruent number.

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, 74724 + ... + 75563.

It is an arithmetic number, because the mean of its divisors is an integer number (4208064).

Almost surely, 2^63120540 is an apocalyptic number.

63120540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63120540 is an abundant number, since it is smaller than the sum of its proper divisors (138866532).

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

63120540 is a wasteful number, since it uses less digits than its factorization.

63120540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150306 (or 150304 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 63120540 is about 7944.8436107956. The cubic root of 63120540 is about 398.1593345355.

Adding to 63120540 its reverse (4502136), we get a palindrome (67622676).

The spelling of 63120540 in words is "sixty-three million, one hundred twenty thousand, five hundred forty".