653907 has 4 divisors (see below), whose sum is σ = 871880. Its totient is φ = 435936.

The previous prime is 653903. The next prime is 653927. The reversal of 653907 is 709356.

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

It is not a de Polignac number, because 653907 - 2² = 653903 is a prime.

It is a D-number.

It is a Duffinian number.

653907 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 653907.

It is not an unprimeable number, because it can be changed into a prime (653903) 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, 108982 + ... + 108987.

It is an arithmetic number, because the mean of its divisors is an integer number (217970).

2⁶⁵³⁹⁰⁷ is an apocalyptic number.

653907 is a deficient number, since it is larger than the sum of its proper divisors (217973).

653907 is a wasteful number, since it uses less digits than its factorization.

653907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217972.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 653907 is about 808.6451632206. The cubic root of 653907 is about 86.7971227288.

The spelling of 653907 in words is "six hundred fifty-three thousand, nine hundred seven".