667155 has 16 divisors (see below), whose sum is σ = 1082880. Its totient is φ = 350688.

The previous prime is 667141. The next prime is 667171. The reversal of 667155 is 551766.

It is not a de Polignac number, because 667155 - 2⁵ = 667123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904 + ... + 1466.

It is an arithmetic number, because the mean of its divisors is an integer number (67680).

2⁶⁶⁷¹⁵⁵ is an apocalyptic number.

667155 is a deficient number, since it is larger than the sum of its proper divisors (415725).

667155 is a wasteful number, since it uses less digits than its factorization.

667155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its digits is 6300, while the sum is 30.

The square root of 667155 is about 816.7955680585. The cubic root of 667155 is about 87.3793711907.

It can be divided in two parts, 6 and 67155, that added together give a triangular number (67161 = T₃₆₆).

The spelling of 667155 in words is "six hundred sixty-seven thousand, one hundred fifty-five".