688361503 has 8 divisors (see below), whose sum is σ = 719280000. Its totient is φ = 657525528.

The previous prime is 688361489. The next prime is 688361519. The reversal of 688361503 is 305163886.

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

It is a cyclic number.

It is not a de Polignac number, because 688361503 - 2¹³ = 688353311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688361573) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3253 + ... + 37246.

It is an arithmetic number, because the mean of its divisors is an integer number (89910000).

Almost surely, 2^688361503 is an apocalyptic number.

688361503 is a deficient number, since it is larger than the sum of its proper divisors (30918497).

688361503 is a wasteful number, since it uses less digits than its factorization.

688361503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41261.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 688361503 is about 26236.6442785658. The cubic root of 688361503 is about 882.9555851861.

It can be divided in two parts, 6883 and 61503, that added together give a palindrome (68386).

The spelling of 688361503 in words is "six hundred eighty-eight million, three hundred sixty-one thousand, five hundred three".