216015707 has 2 divisors, whose sum is σ = 216015708. Its totient is φ = 216015706.

The previous prime is 216015689. The next prime is 216015733. The reversal of 216015707 is 707510612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216015707 - 2⁶ = 216015643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216015707.

It is not a weakly prime, because it can be changed into another prime (216015797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108007853 + 108007854.

It is an arithmetic number, because the mean of its divisors is an integer number (108007854).

Almost surely, 2^216015707 is an apocalyptic number.

216015707 is a deficient number, since it is larger than the sum of its proper divisors (1).

216015707 is an equidigital number, since it uses as much as digits as its factorization.

216015707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 216015707 is about 14697.4728099766. The cubic root of 216015707 is about 600.0145431660.

The spelling of 216015707 in words is "two hundred sixteen million, fifteen thousand, seven hundred seven".