687258145 has 8 divisors (see below), whose sum is σ = 942525504. Its totient is φ = 471262704.

The previous prime is 687258119. The next prime is 687258157. The reversal of 687258145 is 541852786.

687258145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 687258145 - 2²⁹ = 150387233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 687258095 and 687258104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9817939 + ... + 9818008.

It is an arithmetic number, because the mean of its divisors is an integer number (117815688).

Almost surely, 2^687258145 is an apocalyptic number.

It is an amenable number.

687258145 is a deficient number, since it is larger than the sum of its proper divisors (255267359).

687258145 is a wasteful number, since it uses less digits than its factorization.

687258145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19635959.

The product of its digits is 537600, while the sum is 46.

The square root of 687258145 is about 26215.6088046797. The cubic root of 687258145 is about 882.4835768571.

The spelling of 687258145 in words is "six hundred eighty-seven million, two hundred fifty-eight thousand, one hundred forty-five".