63534409 has 2 divisors, whose sum is σ = 63534410. Its totient is φ = 63534408.

The previous prime is 63534337. The next prime is 63534451. The reversal of 63534409 is 90443536.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57760000 + 5774409 = 7600^2 + 2403^2 .

It is a cyclic number.

It is not a de Polignac number, because 63534409 - 2⁷ = 63534281 is a prime.

It is a super-2 number, since 2×63534409² = 8073242253958562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63534479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31767204 + 31767205.

It is an arithmetic number, because the mean of its divisors is an integer number (31767205).

Almost surely, 2^63534409 is an apocalyptic number.

It is an amenable number.

63534409 is a deficient number, since it is larger than the sum of its proper divisors (1).

63534409 is an equidigital number, since it uses as much as digits as its factorization.

63534409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 63534409 is about 7970.8474455355. The cubic root of 63534409 is about 399.0276570381.

The spelling of 63534409 in words is "sixty-three million, five hundred thirty-four thousand, four hundred nine".