63676769 has 4 divisors (see below), whose sum is σ = 68574996. Its totient is φ = 58778544.

The previous prime is 63676757. The next prime is 63676777. The reversal of 63676769 is 96767636.

63676769 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 can be written as a sum of positive squares in 2 ways, for example, as 19254544 + 44422225 = 4388^2 + 6665^2 .

It is a cyclic number.

It is not a de Polignac number, because 63676769 - 2²⁰ = 62628193 is a prime.

It is a super-2 number, since 2×63676769² = 8109461820558722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63676709) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2449094 + ... + 2449119.

It is an arithmetic number, because the mean of its divisors is an integer number (17143749).

Almost surely, 2^63676769 is an apocalyptic number.

It is an amenable number.

63676769 is a deficient number, since it is larger than the sum of its proper divisors (4898227).

63676769 is a wasteful number, since it uses less digits than its factorization.

63676769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898226.

The product of its digits is 1714608, while the sum is 50.

The square root of 63676769 is about 7979.7724904912. The cubic root of 63676769 is about 399.3254652298.

The spelling of 63676769 in words is "sixty-three million, six hundred seventy-six thousand, seven hundred sixty-nine".