655402105 has 8 divisors (see below), whose sum is σ = 832746312. Its totient is φ = 493479168.

The previous prime is 655402079. The next prime is 655402133. The reversal of 655402105 is 501204556.

It can be written as a sum of positive squares in 4 ways, for example, as 172633321 + 482768784 = 13139^2 + 21972^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 655402105 - 2¹⁷ = 655271033 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3855222 + ... + 3855391.

It is an arithmetic number, because the mean of its divisors is an integer number (104093289).

Almost surely, 2^655402105 is an apocalyptic number.

It is an amenable number.

655402105 is a deficient number, since it is larger than the sum of its proper divisors (177344207).

655402105 is a wasteful number, since it uses less digits than its factorization.

655402105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710635.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 655402105 is about 25600.8223500731. The cubic root of 655402105 is about 868.6322388902.

The spelling of 655402105 in words is "six hundred fifty-five million, four hundred two thousand, one hundred five".