120628565 has 4 divisors (see below), whose sum is σ = 144754284. Its totient is φ = 96502848.

The previous prime is 120628559. The next prime is 120628577. The reversal of 120628565 is 565826021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565826021 = 127 ⋅4455323.

It can be written as a sum of positive squares in 2 ways, for example, as 92602129 + 28026436 = 9623^2 + 5294^2 .

It is a cyclic number.

It is not a de Polignac number, because 120628565 - 2⁸ = 120628309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12062852 + ... + 12062861.

It is an arithmetic number, because the mean of its divisors is an integer number (36188571).

Almost surely, 2^120628565 is an apocalyptic number.

It is an amenable number.

120628565 is a deficient number, since it is larger than the sum of its proper divisors (24125719).

120628565 is an equidigital number, since it uses as much as digits as its factorization.

120628565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24125718.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 120628565 is about 10983.1036141885. The cubic root of 120628565 is about 494.1021236522.

The spelling of 120628565 in words is "one hundred twenty million, six hundred twenty-eight thousand, five hundred sixty-five".