216752307 has 4 divisors (see below), whose sum is σ = 289003080. Its totient is φ = 144501536.

The previous prime is 216752287. The next prime is 216752311. The reversal of 216752307 is 703257612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216752307 - 2¹² = 216748211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216752357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36125382 + ... + 36125387.

It is an arithmetic number, because the mean of its divisors is an integer number (72250770).

Almost surely, 2^216752307 is an apocalyptic number.

216752307 is a deficient number, since it is larger than the sum of its proper divisors (72250773).

216752307 is an equidigital number, since it uses as much as digits as its factorization.

216752307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72250772.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 216752307 is about 14722.5102139547. The cubic root of 216752307 is about 600.6957734093.

The spelling of 216752307 in words is "two hundred sixteen million, seven hundred fifty-two thousand, three hundred seven".