612653 has 4 divisors (see below), whose sum is σ = 632448. Its totient is φ = 592860.

The previous prime is 612649. The next prime is 612671. The reversal of 612653 is 356216.

612653 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 612653 - 2² = 612649 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612613) 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, 9851 + ... + 9912.

It is an arithmetic number, because the mean of its divisors is an integer number (158112).

2⁶¹²⁶⁵³ is an apocalyptic number.

It is an amenable number.

612653 is a deficient number, since it is larger than the sum of its proper divisors (19795).

612653 is a wasteful number, since it uses less digits than its factorization.

612653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19794.

The product of its digits is 1080, while the sum is 23.

The square root of 612653 is about 782.7215341359. The cubic root of 612653 is about 84.9320333264.

Adding to 612653 its reverse (356216), we get a palindrome (968869).

The spelling of 612653 in words is "six hundred twelve thousand, six hundred fifty-three".