687370465 has 8 divisors (see below), whose sum is σ = 829119528. Its totient is φ = 547046400.

The previous prime is 687370451. The next prime is 687370553. The reversal of 687370465 is 564073786.

It can be written as a sum of positive squares in 4 ways, for example, as 91809 + 687278656 = 303^2 + 26216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 687370465 - 2⁷ = 687370337 is a prime.

It is a Duffinian number.

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, 355186 + ... + 357115.

It is an arithmetic number, because the mean of its divisors is an integer number (103639941).

Almost surely, 2^687370465 is an apocalyptic number.

It is an amenable number.

687370465 is a deficient number, since it is larger than the sum of its proper divisors (141749063).

687370465 is a wasteful number, since it uses less digits than its factorization.

687370465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712499.

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 687370465 is about 26217.7509523605. The cubic root of 687370465 is about 882.5316496018.

The spelling of 687370465 in words is "six hundred eighty-seven million, three hundred seventy thousand, four hundred sixty-five".