662674979 has 2 divisors, whose sum is σ = 662674980. Its totient is φ = 662674978.

The previous prime is 662674963. The next prime is 662675081. The reversal of 662674979 is 979476266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662674979 - 2⁴ = 662674963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (662674079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331337489 + 331337490.

It is an arithmetic number, because the mean of its divisors is an integer number (331337490).

Almost surely, 2^662674979 is an apocalyptic number.

662674979 is a deficient number, since it is larger than the sum of its proper divisors (1).

662674979 is an equidigital number, since it uses as much as digits as its factorization.

662674979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 56.

The square root of 662674979 is about 25742.4742206339. The cubic root of 662674979 is about 871.8334431172.

It can be divided in two parts, 662674 and 979, that multiplied together give a palindrome (648757846).

The spelling of 662674979 in words is "six hundred sixty-two million, six hundred seventy-four thousand, nine hundred seventy-nine".