63420689 has 4 divisors (see below), whose sum is σ = 66758640. Its totient is φ = 60082740.

The previous prime is 63420677. The next prime is 63420697. The reversal of 63420689 is 98602436.

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 63420689 - 2⁴ = 63420673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63420649) 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, 1668947 + ... + 1668984.

It is an arithmetic number, because the mean of its divisors is an integer number (16689660).

Almost surely, 2^63420689 is an apocalyptic number.

It is an amenable number.

63420689 is a deficient number, since it is larger than the sum of its proper divisors (3337951).

63420689 is a wasteful number, since it uses less digits than its factorization.

63420689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337950.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 63420689 is about 7963.7107556716. The cubic root of 63420689 is about 398.7894421534.

The spelling of 63420689 in words is "sixty-three million, four hundred twenty thousand, six hundred eighty-nine".