662990491827 has 36 divisors (see below), whose sum is σ = 987229268040. Its totient is φ = 439745628672.

The previous prime is 662990491783. The next prime is 662990491837. The reversal of 662990491827 is 728194099266.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

662990491827 is a `hidden beast` number, since 6 + 62 + 9 + 9 + 0 + 491 + 82 + 7 = 666.

It is not a de Polignac number, because 662990491827 - 2¹¹ = 662990489779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (662990491837) 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 in 35 ways as a sum of consecutive naturals, for example, 1476593299 + ... + 1476593747.

Almost surely, 2^662990491827 is an apocalyptic number.

662990491827 is a deficient number, since it is larger than the sum of its proper divisors (324238776213).

662990491827 is an frugal number, since it uses more digits than its factorization.

662990491827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 662990491827 in words is "six hundred sixty-two billion, nine hundred ninety million, four hundred ninety-one thousand, eight hundred twenty-seven".