655448029 has 4 divisors (see below), whose sum is σ = 655954684. Its totient is φ = 654941376.

The previous prime is 655447999. The next prime is 655448077. The reversal of 655448029 is 920844556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 484440100 + 171007929 = 22010^2 + 13077^2 .

It is a cyclic number.

It is not a de Polignac number, because 655448029 - 2¹⁷ = 655316957 is a prime.

It is a super-2 number, since 2×655448029² = 859224237439969682, 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 (655448329) 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 3 ways as a sum of consecutive naturals, for example, 251382 + ... + 253975.

It is an arithmetic number, because the mean of its divisors is an integer number (163988671).

Almost surely, 2^655448029 is an apocalyptic number.

It is an amenable number.

655448029 is a deficient number, since it is larger than the sum of its proper divisors (506655).

655448029 is a wasteful number, since it uses less digits than its factorization.

655448029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506654.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 655448029 is about 25601.7192586748. The cubic root of 655448029 is about 868.6525267587.

The spelling of 655448029 in words is "six hundred fifty-five million, four hundred forty-eight thousand, twenty-nine".