653206655 has 4 divisors (see below), whose sum is σ = 783847992. Its totient is φ = 522565320.

The previous prime is 653206649. The next prime is 653206669. The reversal of 653206655 is 556602356.

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

It is not a de Polignac number, because 653206655 - 2²⁴ = 636429439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65320661 + ... + 65320670.

It is an arithmetic number, because the mean of its divisors is an integer number (195961998).

Almost surely, 2^653206655 is an apocalyptic number.

653206655 is a deficient number, since it is larger than the sum of its proper divisors (130641337).

653206655 is a wasteful number, since it uses less digits than its factorization.

653206655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130641336.

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 653206655 is about 25557.9078760371. The cubic root of 653206655 is about 867.6612461770.

The spelling of 653206655 in words is "six hundred fifty-three million, two hundred six thousand, six hundred fifty-five".