687548145 has 16 divisors (see below), whose sum is σ = 1100436480. Its totient is φ = 366572544.

The previous prime is 687548123. The next prime is 687548189. The reversal of 687548145 is 541845786.

It is not a de Polignac number, because 687548145 - 2⁹ = 687547633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 687548094 and 687548103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58992 + ... + 69678.

It is an arithmetic number, because the mean of its divisors is an integer number (68777280).

Almost surely, 2^687548145 is an apocalyptic number.

It is an amenable number.

687548145 is a deficient number, since it is larger than the sum of its proper divisors (412888335).

687548145 is a wasteful number, since it uses less digits than its factorization.

687548145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14984.

The product of its digits is 1075200, while the sum is 48.

The square root of 687548145 is about 26221.1392773083. The cubic root of 687548145 is about 882.6076856077.

The spelling of 687548145 in words is "six hundred eighty-seven million, five hundred forty-eight thousand, one hundred forty-five".