688393054 has 8 divisors (see below), whose sum is σ = 1032717600. Its totient is φ = 344153856.

The previous prime is 688393051. The next prime is 688393081. The reversal of 688393054 is 450393886.

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

It is a junction number, because it is equal to n+sod(n) for n = 688392995 and 688393013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688393051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5662 + ... + 37534.

It is an arithmetic number, because the mean of its divisors is an integer number (129089700).

Almost surely, 2^688393054 is an apocalyptic number.

688393054 is a deficient number, since it is larger than the sum of its proper divisors (344324546).

688393054 is a wasteful number, since it uses less digits than its factorization.

688393054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42674.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 688393054 is about 26237.2455490282. The cubic root of 688393054 is about 882.9690750486.

The spelling of 688393054 in words is "six hundred eighty-eight million, three hundred ninety-three thousand, fifty-four".