216603546 has 16 divisors (see below), whose sum is σ = 433413504. Its totient is φ = 72166784.

The previous prime is 216603493. The next prime is 216603547. The reversal of 216603546 is 645306612.

216603546 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216603546² = 93834192279548232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216603547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7306 + ... + 22058.

It is an arithmetic number, because the mean of its divisors is an integer number (27088344).

Almost surely, 2^216603546 is an apocalyptic number.

216603546 is an abundant number, since it is smaller than the sum of its proper divisors (216809958).

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

216603546 is a wasteful number, since it uses less digits than its factorization.

216603546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17205.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 216603546 is about 14717.4571852613. The cubic root of 216603546 is about 600.5583191939.

The spelling of 216603546 in words is "two hundred sixteen million, six hundred three thousand, five hundred forty-six".