63489797 has 4 divisors (see below), whose sum is σ = 72559776. Its totient is φ = 54419820.

The previous prime is 63489793. The next prime is 63489799. The reversal of 63489797 is 79798436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63489797 - 2² = 63489793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63489791) 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, 4534979 + ... + 4534992.

It is an arithmetic number, because the mean of its divisors is an integer number (18139944).

Almost surely, 2^63489797 is an apocalyptic number.

It is an amenable number.

63489797 is a deficient number, since it is larger than the sum of its proper divisors (9069979).

63489797 is an equidigital number, since it uses as much as digits as its factorization.

63489797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9069978.

The product of its digits is 2286144, while the sum is 53.

The square root of 63489797 is about 7968.0485063785. The cubic root of 63489797 is about 398.9342399943.

The spelling of 63489797 in words is "sixty-three million, four hundred eighty-nine thousand, seven hundred ninety-seven".