647252 has 12 divisors (see below), whose sum is σ = 1144416. Its totient is φ = 320280.

The previous prime is 647219. The next prime is 647261. The reversal of 647252 is 252746.

It is a d-powerful number, because it can be written as 6⁷ + 4⁹ + 2¹¹ + 7⁵ + 5⁷ + 2¹³ .

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647252.

It is an unprimeable number.

647252 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374 + ... + 1197.

It is an arithmetic number, because the mean of its divisors is an integer number (95368).

2⁶⁴⁷²⁵² is an apocalyptic number.

It is an amenable number.

647252 is a deficient number, since it is larger than the sum of its proper divisors (497164).

647252 is a wasteful number, since it uses less digits than its factorization.

647252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678 (or 1676 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 647252 is about 804.5197325113. The cubic root of 647252 is about 86.5016650197.

Adding to 647252 its reverse (252746), we get a palindrome (899998).

The spelling of 647252 in words is "six hundred forty-seven thousand, two hundred fifty-two".