653955 has 8 divisors (see below), whose sum is σ = 1046352. Its totient is φ = 348768.

The previous prime is 653951. The next prime is 653963. The reversal of 653955 is 559356.

653955 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 653955 - 2² = 653951 is a prime.

653955 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (653951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21784 + ... + 21813.

It is an arithmetic number, because the mean of its divisors is an integer number (130794).

2⁶⁵³⁹⁵⁵ is an apocalyptic number.

653955 is a deficient number, since it is larger than the sum of its proper divisors (392397).

653955 is a wasteful number, since it uses less digits than its factorization.

653955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43605.

The product of its digits is 20250, while the sum is 33.

The square root of 653955 is about 808.6748419482. The cubic root of 653955 is about 86.7992464558.

The spelling of 653955 in words is "six hundred fifty-three thousand, nine hundred fifty-five".