63987958 has 4 divisors (see below), whose sum is σ = 95981940. Its totient is φ = 31993978.

The previous prime is 63987947. The next prime is 63987961. The reversal of 63987958 is 85978936.

It is a happy number.

63987958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-4 number, since 4×63987958⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63987899 and 63987908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15996988 + ... + 15996991.

It is an arithmetic number, because the mean of its divisors is an integer number (23995485).

Almost surely, 2^63987958 is an apocalyptic number.

63987958 is a deficient number, since it is larger than the sum of its proper divisors (31993982).

63987958 is a wasteful number, since it uses less digits than its factorization.

63987958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31993981.

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

The square root of 63987958 is about 7999.2473395939. The cubic root of 63987958 is about 399.9749109264.

The spelling of 63987958 in words is "sixty-three million, nine hundred eighty-seven thousand, nine hundred fifty-eight".