689181676 has 6 divisors (see below), whose sum is σ = 1206067940. Its totient is φ = 344590836.

The previous prime is 689181659. The next prime is 689181697. The reversal of 689181676 is 676181986.

It is a happy 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, 86147706 + ... + 86147713.

Almost surely, 2^689181676 is an apocalyptic number.

It is an amenable number.

689181676 is a deficient number, since it is larger than the sum of its proper divisors (516886264).

689181676 is a wasteful number, since it uses less digits than its factorization.

689181676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172295423 (or 172295421 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 689181676 is about 26252.2699209040. The cubic root of 689181676 is about 883.3061223689.

The spelling of 689181676 in words is "six hundred eighty-nine million, one hundred eighty-one thousand, six hundred seventy-six".