662587949 has 2 divisors, whose sum is σ = 662587950. Its totient is φ = 662587948.

The previous prime is 662587909. The next prime is 662587973. The reversal of 662587949 is 949785266.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581677924 + 80910025 = 24118^2 + 8995^2 .

It is a cyclic number.

It is not a de Polignac number, because 662587949 - 2⁸ = 662587693 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 662587894 and 662587903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662587909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331293974 + 331293975.

It is an arithmetic number, because the mean of its divisors is an integer number (331293975).

Almost surely, 2^662587949 is an apocalyptic number.

It is an amenable number.

662587949 is a deficient number, since it is larger than the sum of its proper divisors (1).

662587949 is an equidigital number, since it uses as much as digits as its factorization.

662587949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The square root of 662587949 is about 25740.7837681761. The cubic root of 662587949 is about 871.7952750917.

The spelling of 662587949 in words is "six hundred sixty-two million, five hundred eighty-seven thousand, nine hundred forty-nine".