646332770282 has 8 divisors (see below), whose sum is σ = 970382931876. Its totient is φ = 322871792992.

The previous prime is 646332770263. The next prime is 646332770297. The reversal of 646332770282 is 282077233646.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 524985744481 + 121347025801 = 724559^2 + 348349^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 646332770282.

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, 147293333 + ... + 147297720.

Almost surely, 2^646332770282 is an apocalyptic number.

646332770282 is a deficient number, since it is larger than the sum of its proper divisors (324050161594).

646332770282 is a wasteful number, since it uses less digits than its factorization.

646332770282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294592152.

The product of its (nonzero) digits is 4064256, while the sum is 50.

The spelling of 646332770282 in words is "six hundred forty-six billion, three hundred thirty-two million, seven hundred seventy thousand, two hundred eighty-two".