687493001 has 8 divisors (see below), whose sum is σ = 740619264. Its totient is φ = 634401360.

The previous prime is 687492973. The next prime is 687493013. The reversal of 687493001 is 100394786.

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 687493001 - 2²⁶ = 620384137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687493031) 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, 44906 + ... + 58236.

It is an arithmetic number, because the mean of its divisors is an integer number (92577408).

Almost surely, 2^687493001 is an apocalyptic number.

It is an amenable number.

687493001 is a deficient number, since it is larger than the sum of its proper divisors (53126263).

687493001 is a wasteful number, since it uses less digits than its factorization.

687493001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17311.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 687493001 is about 26220.0877382209. The cubic root of 687493001 is about 882.5840888022.

The spelling of 687493001 in words is "six hundred eighty-seven million, four hundred ninety-three thousand, one".