247064 has 16 divisors (see below), whose sum is σ = 469800. Its totient is φ = 121792.

The previous prime is 247031. The next prime is 247067. The reversal of 247064 is 460742.

247064 = 2² + 3² + ... + 90².

It is a super-2 number, since 2×247064² = 122081240192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247067) by changing a digit.

247064 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539 + ... + 885.

2²⁴⁷⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

247064 is a deficient number, since it is larger than the sum of its proper divisors (222736).

247064 is a wasteful number, since it uses less digits than its factorization.

247064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 247064 is about 497.0553289122. The cubic root of 247064 is about 62.7484722093.

The spelling of 247064 in words is "two hundred forty-seven thousand, sixty-four".