63795661 has 2 divisors, whose sum is σ = 63795662. Its totient is φ = 63795660.

The previous prime is 63795643. The next prime is 63795707. The reversal of 63795661 is 16659736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55204900 + 8590761 = 7430^2 + 2931^2 .

It is a cyclic number.

It is not a de Polignac number, because 63795661 - 2¹³ = 63787469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63795601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31897830 + 31897831.

It is an arithmetic number, because the mean of its divisors is an integer number (31897831).

Almost surely, 2^63795661 is an apocalyptic number.

It is an amenable number.

63795661 is a deficient number, since it is larger than the sum of its proper divisors (1).

63795661 is an equidigital number, since it uses as much as digits as its factorization.

63795661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 63795661 is about 7987.2186022420. The cubic root of 63795661 is about 399.5738398801.

The spelling of 63795661 in words is "sixty-three million, seven hundred ninety-five thousand, six hundred sixty-one".