662951 has 2 divisors, whose sum is σ = 662952. Its totient is φ = 662950.

The previous prime is 662947. The next prime is 662953. The reversal of 662951 is 159266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 662951 - 2² = 662947 is a prime.

It is a Sophie Germain prime.

Together with 662953, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6³ + 6³ + 9⁶ + 2¹⁷ + 5 + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331475 + 331476.

It is an arithmetic number, because the mean of its divisors is an integer number (331476).

2⁶⁶²⁹⁵¹ is an apocalyptic number.

662951 is a deficient number, since it is larger than the sum of its proper divisors (1).

662951 is an equidigital number, since it uses as much as digits as its factorization.

662951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 662951 is about 814.2180297684. The cubic root of 662951 is about 87.1954473256.

The spelling of 662951 in words is "six hundred sixty-two thousand, nine hundred fifty-one".