63855480 has 64 divisors (see below), whose sum is σ = 206307360. Its totient is φ = 15717888.

The previous prime is 63855479. The next prime is 63855481. The reversal of 63855480 is 8455836.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63855479) and next prime (63855481).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63855481) 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, 18907 + ... + 22026.

Almost surely, 2^63855480 is an apocalyptic number.

63855480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63855480 is an abundant number, since it is smaller than the sum of its proper divisors (142451880).

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

63855480 is a wasteful number, since it uses less digits than its factorization.

63855480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40960 (or 40956 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 63855480 is about 7990.9623951061. The cubic root of 63855480 is about 399.6986897540.

The spelling of 63855480 in words is "sixty-three million, eight hundred fifty-five thousand, four hundred eighty".