688029048 has 48 divisors (see below), whose sum is σ = 2129615280. Its totient is φ = 196579584.

The previous prime is 688029029. The next prime is 688029071. The reversal of 688029048 is 840920886.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 688028994 and 688029012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 682065 + ... + 683072.

It is an arithmetic number, because the mean of its divisors is an integer number (44366985).

Almost surely, 2^688029048 is an apocalyptic number.

It is an amenable number.

688029048 is an abundant number, since it is smaller than the sum of its proper divisors (1441586232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688029048 is a wasteful number, since it uses less digits than its factorization.

688029048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365156 (or 1365149 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 688029048 is about 26230.3078136723. The cubic root of 688029048 is about 882.8134165399.

The spelling of 688029048 in words is "six hundred eighty-eight million, twenty-nine thousand, forty-eight".