688465 has 8 divisors (see below), whose sum is σ = 869760. Its totient is φ = 521712.

The previous prime is 688453. The next prime is 688477. The reversal of 688465 is 564886.

It is an interprime number because it is at equal distance from previous prime (688453) and next prime (688477).

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 688465 - 2⁵ = 688433 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3529 + ... + 3718.

It is an arithmetic number, because the mean of its divisors is an integer number (108720).

2⁶⁸⁸⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

688465 is a deficient number, since it is larger than the sum of its proper divisors (181295).

688465 is a wasteful number, since it uses less digits than its factorization.

688465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7271.

The product of its digits is 46080, while the sum is 37.

The square root of 688465 is about 829.7379104271. The cubic root of 688465 is about 88.2999834549.

The spelling of 688465 in words is "six hundred eighty-eight thousand, four hundred sixty-five".