688587002401 has 4 divisors (see below), whose sum is σ = 724828423600. Its totient is φ = 652345581204.

The previous prime is 688587002347. The next prime is 688587002443. The reversal of 688587002401 is 104200785886.

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 688587002401 - 2¹³ = 688586994209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (688587002501) 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, 18120710571 + ... + 18120710608.

It is an arithmetic number, because the mean of its divisors is an integer number (181207105900).

Almost surely, 2^688587002401 is an apocalyptic number.

It is an amenable number.

688587002401 is a deficient number, since it is larger than the sum of its proper divisors (36241421199).

688587002401 is a wasteful number, since it uses less digits than its factorization.

688587002401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36241421198.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 688587002401 in words is "six hundred eighty-eight billion, five hundred eighty-seven million, two thousand, four hundred one".