655560745 has 8 divisors (see below), whose sum is σ = 899054784. Its totient is φ = 449527344.

The previous prime is 655560733. The next prime is 655560779. The reversal of 655560745 is 547065556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655560745 - 2¹³ = 655552553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9365119 + ... + 9365188.

It is an arithmetic number, because the mean of its divisors is an integer number (112381848).

Almost surely, 2^655560745 is an apocalyptic number.

It is an amenable number.

655560745 is a deficient number, since it is larger than the sum of its proper divisors (243494039).

655560745 is a wasteful number, since it uses less digits than its factorization.

655560745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18730319.

The product of its (nonzero) digits is 630000, while the sum is 43.

The square root of 655560745 is about 25603.9205005796. The cubic root of 655560745 is about 868.7023173456.

The spelling of 655560745 in words is "six hundred fifty-five million, five hundred sixty thousand, seven hundred forty-five".