63485040 has 80 divisors (see below), whose sum is σ = 199237248. Its totient is φ = 16720128.

The previous prime is 63485039. The next prime is 63485041. The reversal of 63485040 is 4058436.

It is an interprime number because it is at equal distance from previous prime (63485039) and next prime (63485041).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 63484989 and 63485007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63485041) 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, 18327 + ... + 21513.

Almost surely, 2^63485040 is an apocalyptic number.

63485040 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 63485040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99618624).

63485040 is an abundant number, since it is smaller than the sum of its proper divisors (135752208).

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

63485040 is a wasteful number, since it uses less digits than its factorization.

63485040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 63485040 is about 7967.7499960779. The cubic root of 63485040 is about 398.9242763064.

The spelling of 63485040 in words is "sixty-three million, four hundred eighty-five thousand, forty".