655603100406 has 48 divisors (see below), whose sum is σ = 1436934751200. Its totient is φ = 216009081600.

The previous prime is 655603100401. The next prime is 655603100423. The reversal of 655603100406 is 604001306556.

655603100406 is a `hidden beast` number, since 6 + 5 + 5 + 603 + 1 + 0 + 0 + 40 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655603100401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 787966 + ... + 1389998.

It is an arithmetic number, because the mean of its divisors is an integer number (29936140650).

Almost surely, 2^655603100406 is an apocalyptic number.

655603100406 is an abundant number, since it is smaller than the sum of its proper divisors (781331650794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655603100406 is a wasteful number, since it uses less digits than its factorization.

655603100406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602741 (or 602738 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 655603100406 in words is "six hundred fifty-five billion, six hundred three million, one hundred thousand, four hundred six".