688025630 has 8 divisors (see below), whose sum is σ = 1238446152. Its totient is φ = 275210248.

The previous prime is 688025573. The next prime is 688025647. The reversal of 688025630 is 36520886.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34401272 + ... + 34401291.

It is an arithmetic number, because the mean of its divisors is an integer number (154805769).

Almost surely, 2^688025630 is an apocalyptic number.

688025630 is a deficient number, since it is larger than the sum of its proper divisors (550420522).

688025630 is a wasteful number, since it uses less digits than its factorization.

688025630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68802570.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 688025630 is about 26230.2426599527. The cubic root of 688025630 is about 882.8119546534.

The spelling of 688025630 in words is "six hundred eighty-eight million, twenty-five thousand, six hundred thirty".