653470 has 16 divisors (see below), whose sum is σ = 1189728. Its totient is φ = 258400.

The previous prime is 653461. The next prime is 653473. The reversal of 653470 is 74356.

653470 = T₃₂₄ + T₃₂₅ + ... + T₃₃₅.

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 653470.

It is not an unprimeable number, because it can be changed into a prime (653473) by changing a digit.

653470 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 7 ways as a sum of consecutive naturals, for example, 687 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (74358).

2⁶⁵³⁴⁷⁰ is an apocalyptic number.

653470 is a deficient number, since it is larger than the sum of its proper divisors (536258).

653470 is a wasteful number, since it uses less digits than its factorization.

653470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 653470 is about 808.3749130199. The cubic root of 653470 is about 86.7777831819. Note that the first 4 decimals are identical.

The spelling of 653470 in words is "six hundred fifty-three thousand, four hundred seventy".