63672540 has 48 divisors (see below), whose sum is σ = 180031488. Its totient is φ = 16812864.

The previous prime is 63672517. The next prime is 63672541. The reversal of 63672540 is 4527636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63672541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1029 + ... + 11331.

It is an arithmetic number, because the mean of its divisors is an integer number (3750656).

Almost surely, 2^63672540 is an apocalyptic number.

63672540 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 63672540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90015744).

63672540 is an abundant number, since it is smaller than the sum of its proper divisors (116358948).

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

63672540 is a wasteful number, since it uses less digits than its factorization.

63672540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10418 (or 10416 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 63672540 is about 7979.5075035995. The cubic root of 63672540 is about 399.3166248275.

The spelling of 63672540 in words is "sixty-three million, six hundred seventy-two thousand, five hundred forty".