647022 has 8 divisors (see below), whose sum is σ = 1294056. Its totient is φ = 215672.

The previous prime is 647011. The next prime is 647033. The reversal of 647022 is 220746.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (647011) and next prime (647033).

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

647022 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 647022.

It is a congruent number.

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, 53913 + ... + 53924.

It is an arithmetic number, because the mean of its divisors is an integer number (161757).

2⁶⁴⁷⁰²² is an apocalyptic number.

647022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647022 is a wasteful number, since it uses less digits than its factorization.

647022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107842.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 647022 is about 804.3767773873. The cubic root of 647022 is about 86.4914177280.

Adding to 647022 its reverse (220746), we get a palindrome (867768).

The spelling of 647022 in words is "six hundred forty-seven thousand, twenty-two".