687325623 has 16 divisors (see below), whose sum is σ = 971341056. Its totient is φ = 430819200.

The previous prime is 687325621. The next prime is 687325649. The reversal of 687325623 is 326523786.

It is a happy number.

It is not a de Polignac number, because 687325623 - 2¹ = 687325621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687325621) 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, 47190 + ... + 60012.

It is an arithmetic number, because the mean of its divisors is an integer number (60708816).

Almost surely, 2^687325623 is an apocalyptic number.

687325623 is a deficient number, since it is larger than the sum of its proper divisors (284015433).

687325623 is a wasteful number, since it uses less digits than its factorization.

687325623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13894.

The product of its digits is 362880, while the sum is 42.

The square root of 687325623 is about 26216.8957544558. The cubic root of 687325623 is about 882.5124579398.

The spelling of 687325623 in words is "six hundred eighty-seven million, three hundred twenty-five thousand, six hundred twenty-three".