63765140 has 48 divisors (see below), whose sum is σ = 145528320. Its totient is φ = 23379840.

The previous prime is 63765133. The next prime is 63765161. The reversal of 63765140 is 4156736.

It is a junction number, because it is equal to n+sod(n) for n = 63765097 and 63765106.

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, 9074 + ... + 14486.

It is an arithmetic number, because the mean of its divisors is an integer number (3031840).

Almost surely, 2^63765140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63765140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72764160).

63765140 is an abundant number, since it is smaller than the sum of its proper divisors (81763180).

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

63765140 is a wasteful number, since it uses less digits than its factorization.

63765140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472 (or 5470 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 63765140 is about 7985.3077586277. The cubic root of 63765140 is about 399.5101085943.

The spelling of 63765140 in words is "sixty-three million, seven hundred sixty-five thousand, one hundred forty".