216002690 has 8 divisors (see below), whose sum is σ = 388804860. Its totient is φ = 86401072.

The previous prime is 216002671. The next prime is 216002711. The reversal of 216002690 is 96200612.

216002690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 213773641 + 2229049 = 14621^2 + 1493^2 .

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

It is a super-2 number, since 2×216002690² = 93314324174472200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10800125 + ... + 10800144.

Almost surely, 2^216002690 is an apocalyptic number.

216002690 is a deficient number, since it is larger than the sum of its proper divisors (172802170).

216002690 is a wasteful number, since it uses less digits than its factorization.

216002690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21600276.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 216002690 is about 14697.0299720726. The cubic root of 216002690 is about 600.0024907304.

The spelling of 216002690 in words is "two hundred sixteen million, two thousand, six hundred ninety".