63826989 has 8 divisors (see below), whose sum is σ = 85345152. Its totient is φ = 42430080.

The previous prime is 63826963. The next prime is 63826991. The reversal of 63826989 is 98962836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63826989 - 2⁵ = 63826957 is a prime.

It is a super-2 number, since 2×63826989² = 8147769049612242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63826949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29077 + ... + 31194.

It is an arithmetic number, because the mean of its divisors is an integer number (10668144).

Almost surely, 2^63826989 is an apocalyptic number.

It is an amenable number.

63826989 is a deficient number, since it is larger than the sum of its proper divisors (21518163).

63826989 is a wasteful number, since it uses less digits than its factorization.

63826989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60627.

The product of its digits is 1119744, while the sum is 51.

The square root of 63826989 is about 7989.1794947917. The cubic root of 63826989 is about 399.6392351363.

The spelling of 63826989 in words is "sixty-three million, eight hundred twenty-six thousand, nine hundred eighty-nine".