63630645 has 32 divisors (see below), whose sum is σ = 110417664. Its totient is φ = 31104000.

The previous prime is 63630613. The next prime is 63630659. The reversal of 63630645 is 54603636.

It is a happy number.

It is not a de Polignac number, because 63630645 - 2⁵ = 63630613 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28365 + ... + 30525.

It is an arithmetic number, because the mean of its divisors is an integer number (3450552).

Almost surely, 2^63630645 is an apocalyptic number.

63630645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63630645 is a deficient number, since it is larger than the sum of its proper divisors (46787019).

63630645 is a wasteful number, since it uses less digits than its factorization.

63630645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 63630645 is about 7976.8819096186. The cubic root of 63630645 is about 399.2290253667.

The spelling of 63630645 in words is "sixty-three million, six hundred thirty thousand, six hundred forty-five".