216725654 has 16 divisors (see below), whose sum is σ = 330855840. Its totient is φ = 106451520.

The previous prime is 216725653. The next prime is 216725657. The reversal of 216725654 is 456527612.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216725653) 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, 39002 + ... + 44210.

It is an arithmetic number, because the mean of its divisors is an integer number (20678490).

Almost surely, 2^216725654 is an apocalyptic number.

216725654 is a deficient number, since it is larger than the sum of its proper divisors (114130186).

216725654 is a wasteful number, since it uses less digits than its factorization.

216725654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575.

The product of its digits is 100800, while the sum is 38.

The square root of 216725654 is about 14721.6050076070. The cubic root of 216725654 is about 600.6711508329.

The spelling of 216725654 in words is "two hundred sixteen million, seven hundred twenty-five thousand, six hundred fifty-four".