688470041101 has 4 divisors (see below), whose sum is σ = 688752087804. Its totient is φ = 688187994400.

The previous prime is 688470041089. The next prime is 688470041117. The reversal of 688470041101 is 101140074886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53245101001 + 635224940100 = 230749^2 + 797010^2 .

It is a cyclic number.

It is not a de Polignac number, because 688470041101 - 2²⁹ = 687933170189 is a prime.

It is a super-2 number, since 2×688470041101² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688470041131) 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, 141019690 + ... + 141024571.

It is an arithmetic number, because the mean of its divisors is an integer number (172188021951).

Almost surely, 2^688470041101 is an apocalyptic number.

It is an amenable number.

688470041101 is a deficient number, since it is larger than the sum of its proper divisors (282046703).

688470041101 is a wasteful number, since it uses less digits than its factorization.

688470041101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282046702.

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 688470041101 in words is "six hundred eighty-eight billion, four hundred seventy million, forty-one thousand, one hundred one".