647914 has 4 divisors (see below), whose sum is σ = 971874. Its totient is φ = 323956.

The previous prime is 647909. The next prime is 647917. The reversal of 647914 is 419746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 308025 = 583^2 + 555^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (647917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161977 + ... + 161980.

2⁶⁴⁷⁹¹⁴ is an apocalyptic number.

647914 is a deficient number, since it is larger than the sum of its proper divisors (323960).

647914 is a wasteful number, since it uses less digits than its factorization.

647914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323959.

The product of its digits is 6048, while the sum is 31.

The square root of 647914 is about 804.9310529480. The cubic root of 647914 is about 86.5311458558.

The spelling of 647914 in words is "six hundred forty-seven thousand, nine hundred fourteen".