688940573 has 8 divisors (see below), whose sum is σ = 696171840. Its totient is φ = 681742080.

The previous prime is 688940563. The next prime is 688940599. The reversal of 688940573 is 375049886.

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 688940573 - 2⁴ = 688940557 is a prime.

It is a super-2 number, since 2×688940573² = 949278226251136658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688940503) 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, 35261 + ... + 51197.

It is an arithmetic number, because the mean of its divisors is an integer number (87021480).

Almost surely, 2^688940573 is an apocalyptic number.

It is an amenable number.

688940573 is a deficient number, since it is larger than the sum of its proper divisors (7231267).

688940573 is a wasteful number, since it uses less digits than its factorization.

688940573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 688940573 is about 26247.6774782075. The cubic root of 688940573 is about 883.2031052192.

The spelling of 688940573 in words is "six hundred eighty-eight million, nine hundred forty thousand, five hundred seventy-three".