676463638 has 4 divisors (see below), whose sum is σ = 1014695460. Its totient is φ = 338231818.

The previous prime is 676463629. The next prime is 676463653. The reversal of 676463638 is 836364676.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 676463591 and 676463600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169115908 + ... + 169115911.

It is an arithmetic number, because the mean of its divisors is an integer number (253673865).

Almost surely, 2^676463638 is an apocalyptic number.

676463638 is a deficient number, since it is larger than the sum of its proper divisors (338231822).

676463638 is a wasteful number, since it uses less digits than its factorization.

676463638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338231821.

The product of its digits is 2612736, while the sum is 49.

The square root of 676463638 is about 26008.9145871180. The cubic root of 676463638 is about 877.8388938925.

The spelling of 676463638 in words is "six hundred seventy-six million, four hundred sixty-three thousand, six hundred thirty-eight".