653470249 has 4 divisors (see below), whose sum is σ = 687863440. Its totient is φ = 619077060.

The previous prime is 653470243. The next prime is 653470261. The reversal of 653470249 is 942074356.

It is a happy number.

653470249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 653470249 - 2²⁵ = 619915817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653470243) 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, 17196567 + ... + 17196604.

It is an arithmetic number, because the mean of its divisors is an integer number (171965860).

Almost surely, 2^653470249 is an apocalyptic number.

It is an amenable number.

653470249 is a deficient number, since it is larger than the sum of its proper divisors (34393191).

653470249 is a wasteful number, since it uses less digits than its factorization.

653470249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34393190.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 653470249 is about 25563.0641551438. The cubic root of 653470249 is about 867.7779420390. Note that the first 3 decimals are identical.

The spelling of 653470249 in words is "six hundred fifty-three million, four hundred seventy thousand, two hundred forty-nine".