662829381 has 6 divisors (see below), whose sum is σ = 957420230. Its totient is φ = 441886248.

The previous prime is 662829379. The next prime is 662829389. The reversal of 662829381 is 183928266.

662829381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 658692225 + 4137156 = 25665^2 + 2034^2 .

It is not a de Polignac number, because 662829381 - 2¹ = 662829379 is a prime.

It is a super-2 number, since 2×662829381² = 878685576633686322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662829389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36823846 + ... + 36823863.

Almost surely, 2^662829381 is an apocalyptic number.

It is an amenable number.

662829381 is a deficient number, since it is larger than the sum of its proper divisors (294590849).

662829381 is a wasteful number, since it uses less digits than its factorization.

662829381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73647715 (or 73647712 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 662829381 is about 25745.4730195427. The cubic root of 662829381 is about 871.9011496994.

The spelling of 662829381 in words is "six hundred sixty-two million, eight hundred twenty-nine thousand, three hundred eighty-one".