647495 has 4 divisors (see below), whose sum is σ = 777000. Its totient is φ = 517992.

The previous prime is 647489. The next prime is 647503. The reversal of 647495 is 594746.

647495 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 647495 - 2¹⁸ = 385351 is a prime.

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 647495.

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, 64745 + ... + 64754.

It is an arithmetic number, because the mean of its divisors is an integer number (194250).

2⁶⁴⁷⁴⁹⁵ is an apocalyptic number.

647495 is a deficient number, since it is larger than the sum of its proper divisors (129505).

647495 is a wasteful number, since it uses less digits than its factorization.

647495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129504.

The product of its digits is 30240, while the sum is 35.

The square root of 647495 is about 804.6707401167. The cubic root of 647495 is about 86.5124888691.

The spelling of 647495 in words is "six hundred forty-seven thousand, four hundred ninety-five".