664151 has 2 divisors, whose sum is σ = 664152. Its totient is φ = 664150.

The previous prime is 664141. The next prime is 664177. The reversal of 664151 is 151466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664151 - 2¹⁰ = 663127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332075 + 332076.

It is an arithmetic number, because the mean of its divisors is an integer number (332076).

2⁶⁶⁴¹⁵¹ is an apocalyptic number.

664151 is a deficient number, since it is larger than the sum of its proper divisors (1).

664151 is an equidigital number, since it uses as much as digits as its factorization.

664151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 664151 is about 814.9545999625. The cubic root of 664151 is about 87.2480261073.

Subtracting from 664151 its sum of digits (23), we obtain a triangular number (664128 = T₁₁₅₂).

The spelling of 664151 in words is "six hundred sixty-four thousand, one hundred fifty-one".