216880486 has 4 divisors (see below), whose sum is σ = 325320732. Its totient is φ = 108440242.

The previous prime is 216880471. The next prime is 216880507. The reversal of 216880486 is 684088612.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54220120 + ... + 54220123.

It is an arithmetic number, because the mean of its divisors is an integer number (81330183).

Almost surely, 2^216880486 is an apocalyptic number.

216880486 is a deficient number, since it is larger than the sum of its proper divisors (108440246).

216880486 is a wasteful number, since it uses less digits than its factorization.

216880486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108440245.

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 216880486 is about 14726.8627344727. The cubic root of 216880486 is about 600.8141595555.

The spelling of 216880486 in words is "two hundred sixteen million, eight hundred eighty thousand, four hundred eighty-six".