216887702 has 4 divisors (see below), whose sum is σ = 325331556. Its totient is φ = 108443850.

The previous prime is 216887651. The next prime is 216887707. The reversal of 216887702 is 207788612.

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

It is a self number, because there is not a number n which added to its sum of digits gives 216887702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216887707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54221924 + ... + 54221927.

It is an arithmetic number, because the mean of its divisors is an integer number (81332889).

Almost surely, 2^216887702 is an apocalyptic number.

216887702 is a deficient number, since it is larger than the sum of its proper divisors (108443854).

216887702 is a wasteful number, since it uses less digits than its factorization.

216887702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108443853.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 216887702 is about 14727.1077269096. The cubic root of 216887702 is about 600.8208228673.

The spelling of 216887702 in words is "two hundred sixteen million, eight hundred eighty-seven thousand, seven hundred two".