63345555 has 96 divisors (see below), whose sum is σ = 139776000. Its totient is φ = 25816320.

The previous prime is 63345523. The next prime is 63345577. The reversal of 63345555 is 55554336.

63345555 is a `hidden beast` number, since 63 + 3 + 45 + 555 = 666.

It is not a de Polignac number, because 63345555 - 2⁵ = 63345523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 126696 + ... + 127194.

It is an arithmetic number, because the mean of its divisors is an integer number (1456000).

Almost surely, 2^63345555 is an apocalyptic number.

63345555 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

63345555 is an abundant number, since it is smaller than the sum of its proper divisors (76430445).

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

63345555 is a wasteful number, since it uses less digits than its factorization.

63345555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 558 counting only the distinct ones).

The product of its digits is 135000, while the sum is 36.

The square root of 63345555 is about 7958.9920844288. The cubic root of 63345555 is about 398.6318990005.

The spelling of 63345555 in words is "sixty-three million, three hundred forty-five thousand, five hundred fifty-five".