1355564685 has 16 divisors (see below), whose sum is σ = 2263204224. Its totient is φ = 691534272.

The previous prime is 1355564669. The next prime is 1355564687. The reversal of 1355564685 is 5864655531.

It is a happy number.

It is not a de Polignac number, because 1355564685 - 2⁴ = 1355564669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355564687) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1964242 + ... + 1964931.

It is an arithmetic number, because the mean of its divisors is an integer number (141450264).

Almost surely, 2^1355564685 is an apocalyptic number.

1355564685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1355564685 is a deficient number, since it is larger than the sum of its proper divisors (907639539).

1355564685 is a wasteful number, since it uses less digits than its factorization.

1355564685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929204.

The product of its digits is 2160000, while the sum is 48.

The square root of 1355564685 is about 36817.9940382417. The cubic root of 1355564685 is about 1106.7259215603.

The spelling of 1355564685 in words is "one billion, three hundred fifty-five million, five hundred sixty-four thousand, six hundred eighty-five".