63534109 has 2 divisors, whose sum is σ = 63534110. Its totient is φ = 63534108.

The previous prime is 63534089. The next prime is 63534131. The reversal of 63534109 is 90143536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38564100 + 24970009 = 6210^2 + 4997^2 .

It is a cyclic number.

It is not a de Polignac number, because 63534109 - 2⁹ = 63533597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63534179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31767054 + 31767055.

It is an arithmetic number, because the mean of its divisors is an integer number (31767055).

Almost surely, 2^63534109 is an apocalyptic number.

It is an amenable number.

63534109 is a deficient number, since it is larger than the sum of its proper divisors (1).

63534109 is an equidigital number, since it uses as much as digits as its factorization.

63534109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 63534109 is about 7970.8286269371. The cubic root of 63534109 is about 399.0270289874.

The spelling of 63534109 in words is "sixty-three million, five hundred thirty-four thousand, one hundred nine".