216602461 has 8 divisors (see below), whose sum is σ = 224244864. Its totient is φ = 209086560.

The previous prime is 216602459. The next prime is 216602497. The reversal of 216602461 is 164206612.

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

It is a cyclic number.

It is not a de Polignac number, because 216602461 - 2¹ = 216602459 is a prime.

It is a super-2 number, since 2×216602461² = 93833252222513042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216602761) 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, 28135 + ... + 34996.

It is an arithmetic number, because the mean of its divisors is an integer number (28030608).

Almost surely, 2^216602461 is an apocalyptic number.

It is an amenable number.

216602461 is a deficient number, since it is larger than the sum of its proper divisors (7642403).

216602461 is an equidigital number, since it uses as much as digits as its factorization.

216602461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63251.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 216602461 is about 14717.4203242280. The cubic root of 216602461 is about 600.5573164296.

The spelling of 216602461 in words is "two hundred sixteen million, six hundred two thousand, four hundred sixty-one".