687093 has 16 divisors (see below), whose sum is σ = 1022976. Its totient is φ = 406640.

The previous prime is 687083. The next prime is 687101. The reversal of 687093 is 390786.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 687093 - 2⁵ = 687061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

687093 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330 + ... + 1772.

It is an arithmetic number, because the mean of its divisors is an integer number (63936).

2⁶⁸⁷⁰⁹³ is an apocalyptic number.

It is an amenable number.

687093 is a deficient number, since it is larger than the sum of its proper divisors (335883).

687093 is a wasteful number, since it uses less digits than its factorization.

687093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 687093 is about 828.9107310199. The cubic root of 687093 is about 88.2412885601.

The spelling of 687093 in words is "six hundred eighty-seven thousand, ninety-three".