668701486 has 8 divisors (see below), whose sum is σ = 1004404464. Its totient is φ = 333900000.

The previous prime is 668701393. The next prime is 668701487. The reversal of 668701486 is 684107866.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 223515 + ... + 226486.

It is an arithmetic number, because the mean of its divisors is an integer number (125550558).

Almost surely, 2^668701486 is an apocalyptic number.

668701486 is a deficient number, since it is larger than the sum of its proper divisors (335702978).

668701486 is a wasteful number, since it uses less digits than its factorization.

668701486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450746.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 668701486 is about 25859.2630598786. The cubic root of 668701486 is about 874.4683512132.

The spelling of 668701486 in words is "six hundred sixty-eight million, seven hundred one thousand, four hundred eighty-six".