63850540 has 48 divisors (see below), whose sum is σ = 145141920. Its totient is φ = 23454720.

The previous prime is 63850519. The next prime is 63850603. The reversal of 63850540 is 4505836.

63850540 = 390² + 391² + ... + 630².

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

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, 62151 + ... + 63169.

It is an arithmetic number, because the mean of its divisors is an integer number (3023790).

Almost surely, 2^63850540 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 63850540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72570960).

63850540 is an abundant number, since it is smaller than the sum of its proper divisors (81291380).

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

63850540 is a wasteful number, since it uses less digits than its factorization.

63850540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 63850540 is about 7990.6532899382. The cubic root of 63850540 is about 399.6883822991.

The spelling of 63850540 in words is "sixty-three million, eight hundred fifty thousand, five hundred forty".