63834645 has 32 divisors (see below), whose sum is σ = 117669888. Its totient is φ = 28945728.

The previous prime is 63834619. The next prime is 63834647. The reversal of 63834645 is 54643836.

It is not a de Polignac number, because 63834645 - 2⁷ = 63834517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63834647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10942 + ... + 15728.

It is an arithmetic number, because the mean of its divisors is an integer number (3677184).

Almost surely, 2^63834645 is an apocalyptic number.

It is an amenable number.

63834645 is a deficient number, since it is larger than the sum of its proper divisors (53835243).

63834645 is a wasteful number, since it uses less digits than its factorization.

63834645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929.

The product of its digits is 207360, while the sum is 39.

The square root of 63834645 is about 7989.6586285022. The cubic root of 63834645 is about 399.6552133074.

The spelling of 63834645 in words is "sixty-three million, eight hundred thirty-four thousand, six hundred forty-five".