653436473 has 4 divisors (see below), whose sum is σ = 653540580. Its totient is φ = 653332368.

The previous prime is 653436437. The next prime is 653436493. The reversal of 653436473 is 374634356.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 557337664 + 96098809 = 23608^2 + 9803^2 .

It is a cyclic number.

It is not a de Polignac number, because 653436473 - 2⁶ = 653436409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 653436473.

It is not an unprimeable number, because it can be changed into a prime (653436493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41990 + ... + 55407.

It is an arithmetic number, because the mean of its divisors is an integer number (163385145).

Almost surely, 2^653436473 is an apocalyptic number.

It is an amenable number.

653436473 is a deficient number, since it is larger than the sum of its proper divisors (104107).

653436473 is an equidigital number, since it uses as much as digits as its factorization.

653436473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104106.

The product of its digits is 544320, while the sum is 41.

The square root of 653436473 is about 25562.4035059303. The cubic root of 653436473 is about 867.7629907984.

The spelling of 653436473 in words is "six hundred fifty-three million, four hundred thirty-six thousand, four hundred seventy-three".