647371 has 2 divisors, whose sum is σ = 647372. Its totient is φ = 647370.

The previous prime is 647363. The next prime is 647399. The reversal of 647371 is 173746.

647371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (647399) can be obtained adding 647371 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647371 - 2³ = 647363 is a prime.

It is not a weakly prime, because it can be changed into another prime (647321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323685 + 323686.

It is an arithmetic number, because the mean of its divisors is an integer number (323686).

2⁶⁴⁷³⁷¹ is an apocalyptic number.

647371 is a deficient number, since it is larger than the sum of its proper divisors (1).

647371 is an equidigital number, since it uses as much as digits as its factorization.

647371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 28.

The square root of 647371 is about 804.5936862790. The cubic root of 647371 is about 86.5069659264.

The spelling of 647371 in words is "six hundred forty-seven thousand, three hundred seventy-one".