653239 has 4 divisors (see below), whose sum is σ = 687640. Its totient is φ = 618840.

The previous prime is 653209. The next prime is 653243. The reversal of 653239 is 932356.

653239 = T₁₂₂ + T₁₂₃ + ... + T₁₇₈.

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

It is a cyclic number.

It is not a de Polignac number, because 653239 - 2⁵ = 653207 is a prime.

It is a super-2 number, since 2×653239² = 853442382242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653209) 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, 17172 + ... + 17209.

It is an arithmetic number, because the mean of its divisors is an integer number (171910).

2⁶⁵³²³⁹ is an apocalyptic number.

653239 is a deficient number, since it is larger than the sum of its proper divisors (34401).

653239 is a wasteful number, since it uses less digits than its factorization.

653239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34400.

The product of its digits is 4860, while the sum is 28.

The square root of 653239 is about 808.2320211424. The cubic root of 653239 is about 86.7675567341.

The spelling of 653239 in words is "six hundred fifty-three thousand, two hundred thirty-nine".