662928289 has 4 divisors (see below), whose sum is σ = 663298180. Its totient is φ = 662558400.

The previous prime is 662928281. The next prime is 662928317. The reversal of 662928289 is 982829266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982829266 = 2 ⋅491414633.

It can be written as a sum of positive squares in 2 ways, for example, as 75690000 + 587238289 = 8700^2 + 24233^2 .

It is a cyclic number.

It is not a de Polignac number, because 662928289 - 2³ = 662928281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662928281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182244 + ... + 185845.

It is an arithmetic number, because the mean of its divisors is an integer number (165824545).

Almost surely, 2^662928289 is an apocalyptic number.

It is an amenable number.

662928289 is a deficient number, since it is larger than the sum of its proper divisors (369891).

662928289 is a wasteful number, since it uses less digits than its factorization.

662928289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369890.

The product of its digits is 1492992, while the sum is 52.

The square root of 662928289 is about 25747.3938292791. The cubic root of 662928289 is about 871.9445161686.

The spelling of 662928289 in words is "six hundred sixty-two million, nine hundred twenty-eight thousand, two hundred eighty-nine".