668701485 has 24 divisors (see below), whose sum is σ = 1220088480. Its totient is φ = 337869792.

The previous prime is 668701393. The next prime is 668701487. The reversal of 668701485 is 584107866.

It is a happy number.

It is not a de Polignac number, because 668701485 - 2⁷ = 668701357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 668701485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668701487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390199 + ... + 391908.

It is an arithmetic number, because the mean of its divisors is an integer number (50837020).

Almost surely, 2^668701485 is an apocalyptic number.

It is an amenable number.

668701485 is a deficient number, since it is larger than the sum of its proper divisors (551386995).

668701485 is a wasteful number, since it uses less digits than its factorization.

668701485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782137 (or 782134 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 668701485 is about 25859.2630405431. The cubic root of 668701485 is about 874.4683507773.

The spelling of 668701485 in words is "six hundred sixty-eight million, seven hundred one thousand, four hundred eighty-five".