612204653 has 4 divisors (see below), whose sum is σ = 612254688. Its totient is φ = 612154620.

The previous prime is 612204623. The next prime is 612204667. The reversal of 612204653 is 356402216.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 612204653 - 2⁶ = 612204589 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 (612204623) 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, 6968 + ... + 35678.

It is an arithmetic number, because the mean of its divisors is an integer number (153063672).

Almost surely, 2^612204653 is an apocalyptic number.

It is an amenable number.

612204653 is a deficient number, since it is larger than the sum of its proper divisors (50035).

612204653 is a wasteful number, since it uses less digits than its factorization.

612204653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50034.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 612204653 is about 24742.7697115743. The cubic root of 612204653 is about 849.1131016824.

Adding to 612204653 its reverse (356402216), we get a palindrome (968606869).

The spelling of 612204653 in words is "six hundred twelve million, two hundred four thousand, six hundred fifty-three".