214720805 has 48 divisors (see below), whose sum is σ = 302561280. Its totient is φ = 145006848.

The previous prime is 214720783. The next prime is 214720823. The reversal of 214720805 is 508027412.

It is not a de Polignac number, because 214720805 - 2¹⁰ = 214719781 is a prime.

It is a super-2 number, since 2×214720805² = 92210048199696050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1690652 + ... + 1690778.

It is an arithmetic number, because the mean of its divisors is an integer number (6303360).

Almost surely, 2^214720805 is an apocalyptic number.

It is an amenable number.

214720805 is a deficient number, since it is larger than the sum of its proper divisors (87840475).

214720805 is a wasteful number, since it uses less digits than its factorization.

214720805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 214720805 is about 14653.3547353499. The cubic root of 214720805 is about 598.8132142991.

The spelling of 214720805 in words is "two hundred fourteen million, seven hundred twenty thousand, eight hundred five".