662782849 has 6 divisors (see below), whose sum is σ = 686426390. Its totient is φ = 639927456.

The previous prime is 662782831. The next prime is 662782853. The reversal of 662782849 is 948287266.

It can be written as a sum of positive squares in 3 ways, for example, as 260499600 + 402283249 = 16140^2 + 20057^2 .

It is not a de Polignac number, because 662782849 - 2²⁹ = 125911937 is a prime.

It is a super-2 number, since 2×662782849² = 878562209857113602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662782796 and 662782805.

It is not an unprimeable number, because it can be changed into a prime (662782829) 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 in 5 ways as a sum of consecutive naturals, for example, 393204 + ... + 394885.

Almost surely, 2^662782849 is an apocalyptic number.

It is an amenable number.

662782849 is a deficient number, since it is larger than the sum of its proper divisors (23643541).

662782849 is an equidigital number, since it uses as much as digits as its factorization.

662782849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788147 (or 788118 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 662782849 is about 25744.5693108275. The cubic root of 662782849 is about 871.8807461310.

The spelling of 662782849 in words is "six hundred sixty-two million, seven hundred eighty-two thousand, eight hundred forty-nine".