688351253 has 4 divisors (see below), whose sum is σ = 697064640. Its totient is φ = 679637868.

The previous prime is 688351211. The next prime is 688351273. The reversal of 688351253 is 352153886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 688351253 - 2¹⁸ = 688089109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 688351253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688351273) 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, 4356575 + ... + 4356732.

It is an arithmetic number, because the mean of its divisors is an integer number (174266160).

Almost surely, 2^688351253 is an apocalyptic number.

It is an amenable number.

688351253 is a deficient number, since it is larger than the sum of its proper divisors (8713387).

688351253 is an equidigital number, since it uses as much as digits as its factorization.

688351253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8713386.

The product of its digits is 172800, while the sum is 41.

The square root of 688351253 is about 26236.4489403578. The cubic root of 688351253 is about 882.9512026344.

The spelling of 688351253 in words is "six hundred eighty-eight million, three hundred fifty-one thousand, two hundred fifty-three".