63645461 has 16 divisors (see below), whose sum is σ = 71470080. Its totient is φ = 56177520.

The previous prime is 63645437. The next prime is 63645487. The reversal of 63645461 is 16454636.

It is a cyclic number.

It is not a de Polignac number, because 63645461 - 2¹⁰ = 63644437 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 (63645961) 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, 112766 + ... + 113328.

It is an arithmetic number, because the mean of its divisors is an integer number (4466880).

Almost surely, 2^63645461 is an apocalyptic number.

It is an amenable number.

63645461 is a deficient number, since it is larger than the sum of its proper divisors (7824619).

63645461 is a wasteful number, since it uses less digits than its factorization.

63645461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its digits is 51840, while the sum is 35.

The square root of 63645461 is about 7977.8105392394. The cubic root of 63645461 is about 399.2600089607.

The spelling of 63645461 in words is "sixty-three million, six hundred forty-five thousand, four hundred sixty-one".