664294151 has 2 divisors, whose sum is σ = 664294152. Its totient is φ = 664294150.

The previous prime is 664294067. The next prime is 664294171. The reversal of 664294151 is 151492466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664294151 - 2¹⁰ = 664293127 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664294171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332147075 + 332147076.

It is an arithmetic number, because the mean of its divisors is an integer number (332147076).

Almost surely, 2^664294151 is an apocalyptic number.

664294151 is a deficient number, since it is larger than the sum of its proper divisors (1).

664294151 is an equidigital number, since it uses as much as digits as its factorization.

664294151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 664294151 is about 25773.9044578038. The cubic root of 664294151 is about 872.5429413216.

The spelling of 664294151 in words is "six hundred sixty-four million, two hundred ninety-four thousand, one hundred fifty-one".