213780608 has 16 divisors (see below), whose sum is σ = 425891310. Its totient is φ = 106890240.

The previous prime is 213780599. The next prime is 213780613. The reversal of 213780608 is 806087312.

It can be written as a sum of positive squares in only one way, i.e., 207590464 + 6190144 = 14408^2 + 2488^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834953 + ... + 835208.

Almost surely, 2^213780608 is an apocalyptic number.

It is an amenable number.

213780608 is a deficient number, since it is larger than the sum of its proper divisors (212110702).

213780608 is an equidigital number, since it uses as much as digits as its factorization.

213780608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670175 (or 1670163 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 213780608 is about 14621.2382512563. The cubic root of 213780608 is about 597.9379286289.

The spelling of 213780608 in words is "two hundred thirteen million, seven hundred eighty thousand, six hundred eight".