688955480 has 32 divisors (see below), whose sum is σ = 1579402800. Its totient is φ = 270381696.

The previous prime is 688955461. The next prime is 688955489. The reversal of 688955480 is 84559886.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688955489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160370 + ... + 164609.

Almost surely, 2^688955480 is an apocalyptic number.

It is an amenable number.

688955480 is an abundant number, since it is smaller than the sum of its proper divisors (890447320).

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

688955480 is a wasteful number, since it uses less digits than its factorization.

688955480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325043 (or 325039 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 53.

The square root of 688955480 is about 26247.9614446532. The cubic root of 688955480 is about 883.2094752963.

The spelling of 688955480 in words is "six hundred eighty-eight million, nine hundred fifty-five thousand, four hundred eighty".