612856949 has 4 divisors (see below), whose sum is σ = 632626560. Its totient is φ = 593087340.

The previous prime is 612856921. The next prime is 612856999. The reversal of 612856949 is 949658216.

612856949 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 612856949 - 2⁸ = 612856693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 612856897 and 612856906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612856999) 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, 9884759 + ... + 9884820.

It is an arithmetic number, because the mean of its divisors is an integer number (158156640).

Almost surely, 2^612856949 is an apocalyptic number.

It is an amenable number.

612856949 is a deficient number, since it is larger than the sum of its proper divisors (19769611).

612856949 is a wasteful number, since it uses less digits than its factorization.

612856949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19769610.

The product of its digits is 933120, while the sum is 50.

The square root of 612856949 is about 24755.9477499853. The cubic root of 612856949 is about 849.4145675831.

The spelling of 612856949 in words is "six hundred twelve million, eight hundred fifty-six thousand, nine hundred forty-nine".