687662601 has 8 divisors (see below), whose sum is σ = 917127264. Its totient is φ = 458319840.

The previous prime is 687662561. The next prime is 687662653. The reversal of 687662601 is 106266786.

It is a happy number.

687662601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 687662601 - 2¹¹ = 687660553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687622601) 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, 16380 + ... + 40541.

It is an arithmetic number, because the mean of its divisors is an integer number (114640908).

Almost surely, 2^687662601 is an apocalyptic number.

It is an amenable number.

687662601 is a deficient number, since it is larger than the sum of its proper divisors (229464663).

687662601 is a wasteful number, since it uses less digits than its factorization.

687662601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60951.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 687662601 is about 26223.3217003491. The cubic root of 687662601 is about 882.6566587309.

The spelling of 687662601 in words is "six hundred eighty-seven million, six hundred sixty-two thousand, six hundred one".