1203406655 has 8 divisors (see below), whose sum is σ = 1575368784. Its totient is φ = 875204800.

The previous prime is 1203406627. The next prime is 1203406663. The reversal of 1203406655 is 5566043021.

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

It is not a de Polignac number, because 1203406655 - 2¹⁰ = 1203405631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10940006 + ... + 10940115.

It is an arithmetic number, because the mean of its divisors is an integer number (196921098).

Almost surely, 2^1203406655 is an apocalyptic number.

1203406655 is a deficient number, since it is larger than the sum of its proper divisors (371962129).

1203406655 is a wasteful number, since it uses less digits than its factorization.

1203406655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21880137.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1203406655 is about 34690.1521328460. The cubic root of 1203406655 is about 1063.6632055256.

Adding to 1203406655 its reverse (5566043021), we get a palindrome (6769449676).

The spelling of 1203406655 in words is "one billion, two hundred three million, four hundred six thousand, six hundred fifty-five".