647075 has 24 divisors (see below), whose sum is σ = 947856. Its totient is φ = 432000.

The previous prime is 647069. The next prime is 647081. The reversal of 647075 is 570746.

It is an interprime number because it is at equal distance from previous prime (647069) and next prime (647081).

It is not a de Polignac number, because 647075 - 2⁶ = 647011 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3485 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (39494).

2⁶⁴⁷⁰⁷⁵ is an apocalyptic number.

647075 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

647075 is a deficient number, since it is larger than the sum of its proper divisors (300781).

647075 is a wasteful number, since it uses less digits than its factorization.

647075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 647075 is about 804.4097214728. The cubic root of 647075 is about 86.4937792758.

The spelling of 647075 in words is "six hundred forty-seven thousand, seventy-five".