687283693 has 4 divisors (see below), whose sum is σ = 692228320. Its totient is φ = 682339068.

The previous prime is 687283687. The next prime is 687283717. The reversal of 687283693 is 396382786.

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 687283693 - 2⁵ = 687283661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 687283693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687283603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2472105 + ... + 2472382.

It is an arithmetic number, because the mean of its divisors is an integer number (173057080).

Almost surely, 2^687283693 is an apocalyptic number.

It is an amenable number.

687283693 is a deficient number, since it is larger than the sum of its proper divisors (4944627).

687283693 is a wasteful number, since it uses less digits than its factorization.

687283693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944626.

The product of its digits is 2612736, while the sum is 52.

The square root of 687283693 is about 26216.0960671111. The cubic root of 687283693 is about 882.4945118123.

The spelling of 687283693 in words is "six hundred eighty-seven million, two hundred eighty-three thousand, six hundred ninety-three".