647073 has 12 divisors (see below), whose sum is σ = 1068288. Its totient is φ = 369720.

The previous prime is 647069. The next prime is 647081. The reversal of 647073 is 370746.

It is not a de Polignac number, because 647073 - 2² = 647069 is a prime.

It is not an unprimeable number, because it can be changed into a prime (647033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5073 + ... + 5198.

It is an arithmetic number, because the mean of its divisors is an integer number (89024).

2⁶⁴⁷⁰⁷³ is an apocalyptic number.

647073 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

647073 is a deficient number, since it is larger than the sum of its proper divisors (421215).

647073 is a wasteful number, since it uses less digits than its factorization.

647073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10284 (or 10281 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 647073 is about 804.4084783243. The cubic root of 647073 is about 86.4936901631.

Subtracting from 647073 its product of nonzero digits (3528), we obtain a triangular number (643545 = T₁₁₃₄).

The spelling of 647073 in words is "six hundred forty-seven thousand, seventy-three".