216874653 has 8 divisors (see below), whose sum is σ = 290000928. Its totient is φ = 144165744.

The previous prime is 216874643. The next prime is 216874663. The reversal of 216874653 is 356478612.

It is an interprime number because it is at equal distance from previous prime (216874643) and next prime (216874663).

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

It is not a de Polignac number, because 216874653 - 2⁵ = 216874621 is a prime.

It is a super-2 number, since 2×216874653² = 94069230227740818, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216874643) 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, 103126 + ... + 105207.

It is an arithmetic number, because the mean of its divisors is an integer number (36250116).

Almost surely, 2^216874653 is an apocalyptic number.

It is an amenable number.

216874653 is a deficient number, since it is larger than the sum of its proper divisors (73126275).

216874653 is a wasteful number, since it uses less digits than its factorization.

216874653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208683.

The product of its digits is 241920, while the sum is 42.

The square root of 216874653 is about 14726.6646936772. The cubic root of 216874653 is about 600.8087732089.

The spelling of 216874653 in words is "two hundred sixteen million, eight hundred seventy-four thousand, six hundred fifty-three".