668151 has 24 divisors (see below), whose sum is σ = 1117584. Its totient is φ = 380160.

The previous prime is 668141. The next prime is 668153. The reversal of 668151 is 151866.

It is not a de Polignac number, because 668151 - 2¹⁰ = 667127 is a prime.

668151 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668153) 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, 1485 + ... + 1881.

It is an arithmetic number, because the mean of its divisors is an integer number (46566).

2⁶⁶⁸¹⁵¹ is an apocalyptic number.

668151 is a deficient number, since it is larger than the sum of its proper divisors (449433).

668151 is a wasteful number, since it uses less digits than its factorization.

668151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 428 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 668151 is about 817.4050403564. The cubic root of 668151 is about 87.4228326454.

The spelling of 668151 in words is "six hundred sixty-eight thousand, one hundred fifty-one".