688130401 has 8 divisors (see below), whose sum is σ = 798173120. Its totient is φ = 581022288.

The previous prime is 688130389. The next prime is 688130413. The reversal of 688130401 is 104031886.

It is an interprime number because it is at equal distance from previous prime (688130389) and next prime (688130413).

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

It is not a de Polignac number, because 688130401 - 2⁷ = 688130273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688130461) 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, 733146 + ... + 734083.

It is an arithmetic number, because the mean of its divisors is an integer number (99771640).

Almost surely, 2^688130401 is an apocalyptic number.

It is an amenable number.

688130401 is a deficient number, since it is larger than the sum of its proper divisors (110042719).

688130401 is a wasteful number, since it uses less digits than its factorization.

688130401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467303.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 688130401 is about 26232.2397251931. The cubic root of 688130401 is about 882.8567632539.

The spelling of 688130401 in words is "six hundred eighty-eight million, one hundred thirty thousand, four hundred one".