216570061 has 8 divisors (see below), whose sum is σ = 227347200. Its totient is φ = 206029920.

The previous prime is 216570043. The next prime is 216570083. The reversal of 216570061 is 160075612.

216570061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 216570061 - 2⁷ = 216569933 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 (216570041) 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, 57376 + ... + 61033.

It is an arithmetic number, because the mean of its divisors is an integer number (28418400).

Almost surely, 2^216570061 is an apocalyptic number.

It is an amenable number.

216570061 is a deficient number, since it is larger than the sum of its proper divisors (10777139).

216570061 is a wasteful number, since it uses less digits than its factorization.

216570061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118499.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 216570061 is about 14716.3195466801. The cubic root of 216570061 is about 600.5273705906.

The spelling of 216570061 in words is "two hundred sixteen million, five hundred seventy thousand, sixty-one".