647093 has 4 divisors (see below), whose sum is σ = 664620. Its totient is φ = 629568.

The previous prime is 647081. The next prime is 647099. The reversal of 647093 is 390746.

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

It can be written as a sum of positive squares in 2 ways, for example, as 228484 + 418609 = 478^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 647093 - 2⁸ = 646837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8708 + ... + 8781.

It is an arithmetic number, because the mean of its divisors is an integer number (166155).

2⁶⁴⁷⁰⁹³ is an apocalyptic number.

It is an amenable number.

647093 is a deficient number, since it is larger than the sum of its proper divisors (17527).

647093 is a wasteful number, since it uses less digits than its factorization.

647093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17526.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 647093 is about 804.4209097233. The cubic root of 647093 is about 86.4945812815.

The spelling of 647093 in words is "six hundred forty-seven thousand, ninety-three".