662641479 has 10 divisors (see below), whose sum is σ = 989871960. Its totient is φ = 441760932.

The previous prime is 662641451. The next prime is 662641489. The reversal of 662641479 is 974146266.

662641479 is a `hidden beast` number, since 6 + 626 + 4 + 14 + 7 + 9 = 666.

It is not a de Polignac number, because 662641479 - 2⁹ = 662640967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662641409) 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 in 9 ways as a sum of consecutive naturals, for example, 4090299 + ... + 4090460.

It is an arithmetic number, because the mean of its divisors is an integer number (98987196).

Almost surely, 2^662641479 is an apocalyptic number.

662641479 is a deficient number, since it is larger than the sum of its proper divisors (327230481).

662641479 is an equidigital number, since it uses as much as digits as its factorization.

662641479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180771 (or 8180762 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 662641479 is about 25741.8235368048. The cubic root of 662641479 is about 871.8187516956.

The spelling of 662641479 in words is "six hundred sixty-two million, six hundred forty-one thousand, four hundred seventy-nine".