63455040 has 168 divisors, whose sum is σ = 238219488. Its totient is φ = 15375360.

The previous prime is 63455039. The next prime is 63455053. The reversal of 63455040 is 4055436.

63455040 = 1047² + 1048² + ... + 1101².

It is a junction number, because it is equal to n+sod(n) for n = 63454995 and 63455013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30679 + ... + 32681.

Almost surely, 2^63455040 is an apocalyptic number.

63455040 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 63455040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119109744).

63455040 is an abundant number, since it is smaller than the sum of its proper divisors (174764448).

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

63455040 is a wasteful number, since it uses less digits than its factorization.

63455040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 63455040 is about 7965.8671844313. The cubic root of 63455040 is about 398.8614288811.

The spelling of 63455040 in words is "sixty-three million, four hundred fifty-five thousand, forty".