63758989 has 4 divisors (see below), whose sum is σ = 72867424. Its totient is φ = 54650556.

The previous prime is 63758963. The next prime is 63759001. The reversal of 63758989 is 98985736.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 63758989 - 2⁷ = 63758861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63758939) 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, 4554207 + ... + 4554220.

It is an arithmetic number, because the mean of its divisors is an integer number (18216856).

Almost surely, 2^63758989 is an apocalyptic number.

It is an amenable number.

63758989 is a deficient number, since it is larger than the sum of its proper divisors (9108435).

63758989 is an equidigital number, since it uses as much as digits as its factorization.

63758989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108434.

The product of its digits is 3265920, while the sum is 55.

The square root of 63758989 is about 7984.9226045091. The cubic root of 63758989 is about 399.4972621514.

The spelling of 63758989 in words is "sixty-three million, seven hundred fifty-eight thousand, nine hundred eighty-nine".