620653 has 8 divisors (see below), whose sum is σ = 717120. Its totient is φ = 530880.

The previous prime is 620647. The next prime is 620657. The reversal of 620653 is 356026.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620657) 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, 1473 + ... + 1846.

It is an arithmetic number, because the mean of its divisors is an integer number (89640).

2⁶²⁰⁶⁵³ is an apocalyptic number.

It is an amenable number.

620653 is a deficient number, since it is larger than the sum of its proper divisors (96467).

620653 is a wasteful number, since it uses less digits than its factorization.

620653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 620653 is about 787.8153336918. The cubic root of 620653 is about 85.3001155839.

Adding to 620653 its reverse (356026), we get a palindrome (976679).

The spelling of 620653 in words is "six hundred twenty thousand, six hundred fifty-three".