653381 has 4 divisors (see below), whose sum is σ = 656064. Its totient is φ = 650700.

The previous prime is 653363. The next prime is 653431. The reversal of 653381 is 183356.

653381 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 653381 - 2¹⁰ = 652357 is a prime.

It is a super-2 number, since 2×653381² = 853813462322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 653381.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 653381.

It is not an unprimeable number, because it can be changed into a prime (653311) 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, 935 + ... + 1476.

It is an arithmetic number, because the mean of its divisors is an integer number (164016).

2⁶⁵³³⁸¹ is an apocalyptic number.

It is an amenable number.

653381 is a deficient number, since it is larger than the sum of its proper divisors (2683).

653381 is a wasteful number, since it uses less digits than its factorization.

653381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682.

The product of its digits is 2160, while the sum is 26.

The square root of 653381 is about 808.3198624307. The cubic root of 653381 is about 86.7738434074.

The spelling of 653381 in words is "six hundred fifty-three thousand, three hundred eighty-one".