820714306 has 8 divisors (see below), whose sum is σ = 1231505100. Its totient is φ = 410212608.

The previous prime is 820714283. The next prime is 820714327. The reversal of 820714306 is 603417028.

It can be written as a sum of positive squares in 2 ways, for example, as 814588681 + 6125625 = 28541^2 + 2475^2 .

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

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, 65031 + ... + 76618.

Almost surely, 2^820714306 is an apocalyptic number.

820714306 is a deficient number, since it is larger than the sum of its proper divisors (410790794).

820714306 is a wasteful number, since it uses less digits than its factorization.

820714306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144548.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 820714306 is about 28648.1117353308. Note that the first 3 decimals coincide. The cubic root of 820714306 is about 936.2618653008.

The spelling of 820714306 in words is "eight hundred twenty million, seven hundred fourteen thousand, three hundred six".