207216061 has 8 divisors (see below), whose sum is σ = 227367000. Its totient is φ = 187666752.

The previous prime is 207216017. The next prime is 207216067. The reversal of 207216061 is 160612702.

It can be written as a sum of positive squares in 4 ways, for example, as 36 + 207216025 = 6^2 + 14395^2 .

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

It is not a de Polignac number, because 207216061 - 2⁹ = 207215549 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 (207216067) 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, 149686 + ... + 151063.

It is an arithmetic number, because the mean of its divisors is an integer number (28420875).

Almost surely, 2^207216061 is an apocalyptic number.

It is an amenable number.

207216061 is a deficient number, since it is larger than the sum of its proper divisors (20150939).

207216061 is a wasteful number, since it uses less digits than its factorization.

207216061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300815.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 207216061 is about 14395.0012504341. The cubic root of 207216061 is about 591.7539123961.

Adding to 207216061 its reverse (160612702), we get a palindrome (367828763).

The spelling of 207216061 in words is "two hundred seven million, two hundred sixteen thousand, sixty-one".