667151 has 4 divisors (see below), whose sum is σ = 688704. Its totient is φ = 645600.

The previous prime is 667141. The next prime is 667171. The reversal of 667151 is 151766.

667151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151766 = 2 ⋅75883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667141) 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, 10730 + ... + 10791.

It is an arithmetic number, because the mean of its divisors is an integer number (172176).

2⁶⁶⁷¹⁵¹ is an apocalyptic number.

667151 is a deficient number, since it is larger than the sum of its proper divisors (21553).

667151 is a wasteful number, since it uses less digits than its factorization.

667151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21552.

The product of its digits is 1260, while the sum is 26.

The square root of 667151 is about 816.7931194617. The cubic root of 667151 is about 87.3791965595.

It can be divided in two parts, 667 and 151, that added together give a palindrome (818).

The spelling of 667151 in words is "six hundred sixty-seven thousand, one hundred fifty-one".