216715045 has 8 divisors (see below), whose sum is σ = 273745440. Its totient is φ = 164247120.

The previous prime is 216715043. The next prime is 216715069. The reversal of 216715045 is 540517612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216715045 - 2¹ = 216715043 is a prime.

It is a super-3 number, since 3×216715045³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216714998 and 216715016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216715043) 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, 1140511 + ... + 1140700.

It is an arithmetic number, because the mean of its divisors is an integer number (34218180).

Almost surely, 2^216715045 is an apocalyptic number.

It is an amenable number.

216715045 is a deficient number, since it is larger than the sum of its proper divisors (57030395).

216715045 is a wasteful number, since it uses less digits than its factorization.

216715045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281235.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 216715045 is about 14721.2446824309. The cubic root of 216715045 is about 600.6613494640.

The spelling of 216715045 in words is "two hundred sixteen million, seven hundred fifteen thousand, forty-five".