63603540 has 288 divisors, whose sum is σ = 259773696. Its totient is φ = 12165120.

The previous prime is 63603523. The next prime is 63603557. The reversal of 63603540 is 4530636.

63603540 is a `hidden beast` number, since 6 + 3 + 603 + 54 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (63603523) and next prime (63603557).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 180004 + ... + 180356.

It is an arithmetic number, because the mean of its divisors is an integer number (901992).

Almost surely, 2^63603540 is an apocalyptic number.

63603540 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 63603540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129886848).

63603540 is an abundant number, since it is smaller than the sum of its proper divisors (196170156).

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

63603540 is a wasteful number, since it uses less digits than its factorization.

63603540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 63603540 is about 7975.1827565266. The cubic root of 63603540 is about 399.1723302549.

The spelling of 63603540 in words is "sixty-three million, six hundred three thousand, five hundred forty".