63795561 has 8 divisors (see below), whose sum is σ = 85097760. Its totient is φ = 42511872.

The previous prime is 63795547. The next prime is 63795601. The reversal of 63795561 is 16559736.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63795561 - 2¹³ = 63787369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63795541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10281 + ... + 15273.

It is an arithmetic number, because the mean of its divisors is an integer number (10637220).

Almost surely, 2^63795561 is an apocalyptic number.

It is an amenable number.

63795561 is a deficient number, since it is larger than the sum of its proper divisors (21302199).

63795561 is a wasteful number, since it uses less digits than its factorization.

63795561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9255.

The product of its digits is 170100, while the sum is 42.

The square root of 63795561 is about 7987.2123422381. The cubic root of 63795561 is about 399.5736311021.

The spelling of 63795561 in words is "sixty-three million, seven hundred ninety-five thousand, five hundred sixty-one".