63205489 has 4 divisors (see below), whose sum is σ = 63221620. Its totient is φ = 63189360.

The previous prime is 63205453. The next prime is 63205501. The reversal of 63205489 is 98450236.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 31169889 + 32035600 = 5583^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 63205489 - 2¹³ = 63197297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63205189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1999 + ... + 11419.

It is an arithmetic number, because the mean of its divisors is an integer number (15805405).

Almost surely, 2^63205489 is an apocalyptic number.

It is an amenable number.

63205489 is a deficient number, since it is larger than the sum of its proper divisors (16131).

63205489 is an equidigital number, since it uses as much as digits as its factorization.

63205489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16130.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 63205489 is about 7950.1879851988. The cubic root of 63205489 is about 398.3378716398.

The spelling of 63205489 in words is "sixty-three million, two hundred five thousand, four hundred eighty-nine".