669220151 has 2 divisors, whose sum is σ = 669220152. Its totient is φ = 669220150.

The previous prime is 669220133. The next prime is 669220183. The reversal of 669220151 is 151022966.

It is a happy number.

It is an a-pointer prime, because the next prime (669220183) can be obtained adding 669220151 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669220151 is a prime.

It is a super-2 number, since 2×669220151² = 895711221008925602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669229151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334610075 + 334610076.

It is an arithmetic number, because the mean of its divisors is an integer number (334610076).

Almost surely, 2^669220151 is an apocalyptic number.

669220151 is a deficient number, since it is larger than the sum of its proper divisors (1).

669220151 is an equidigital number, since it uses as much as digits as its factorization.

669220151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 669220151 is about 25869.2897273968. The cubic root of 669220151 is about 874.6943807762.

The spelling of 669220151 in words is "six hundred sixty-nine million, two hundred twenty thousand, one hundred fifty-one".