688463414 has 4 divisors (see below), whose sum is σ = 1032695124. Its totient is φ = 344231706.

The previous prime is 688463387. The next prime is 688463429. The reversal of 688463414 is 414364886.

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

It is a congruent 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, 172115852 + ... + 172115855.

It is an arithmetic number, because the mean of its divisors is an integer number (258173781).

Almost surely, 2^688463414 is an apocalyptic number.

688463414 is a deficient number, since it is larger than the sum of its proper divisors (344231710).

688463414 is a wasteful number, since it uses less digits than its factorization.

688463414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344231709.

The product of its digits is 442368, while the sum is 44.

The square root of 688463414 is about 26238.5863567380. The cubic root of 688463414 is about 882.9991565005. Note that the first 3 decimals are identical.

The spelling of 688463414 in words is "six hundred eighty-eight million, four hundred sixty-three thousand, four hundred fourteen".