63005945 has 4 divisors (see below), whose sum is σ = 75607140. Its totient is φ = 50404752.

The previous prime is 63005933. The next prime is 63005953. The reversal of 63005945 is 54950036.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14341369 + 48664576 = 3787^2 + 6976^2 .

It is a cyclic number.

It is not a de Polignac number, because 63005945 - 2¹² = 63001849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6300590 + ... + 6300599.

It is an arithmetic number, because the mean of its divisors is an integer number (18901785).

Almost surely, 2^63005945 is an apocalyptic number.

It is an amenable number.

63005945 is a deficient number, since it is larger than the sum of its proper divisors (12601195).

63005945 is a wasteful number, since it uses less digits than its factorization.

63005945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12601194.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 63005945 is about 7937.6284241579. The cubic root of 63005945 is about 397.9182365309.

The spelling of 63005945 in words is "sixty-three million, five thousand, nine hundred forty-five".