216457703 has 16 divisors (see below), whose sum is σ = 270274560. Its totient is φ = 168415200.

The previous prime is 216457691. The next prime is 216457729. The reversal of 216457703 is 307754612.

It is a cyclic number.

It is not a de Polignac number, because 216457703 - 2⁶ = 216457639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216457783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62138 + ... + 65528.

It is an arithmetic number, because the mean of its divisors is an integer number (16892160).

Almost surely, 2^216457703 is an apocalyptic number.

216457703 is a deficient number, since it is larger than the sum of its proper divisors (53816857).

216457703 is a wasteful number, since it uses less digits than its factorization.

216457703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 216457703 is about 14712.5015887850. The cubic root of 216457703 is about 600.4235000832.

The spelling of 216457703 in words is "two hundred sixteen million, four hundred fifty-seven thousand, seven hundred three".