612948557 has 8 divisors (see below), whose sum is σ = 670920600. Its totient is φ = 556522560.

The previous prime is 612948521. The next prime is 612948559. The reversal of 612948557 is 755849216.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45508516 + 567440041 = 6746^2 + 23821^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 612948557 - 2¹² = 612944461 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 (612948559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385682 + ... + 387267.

It is an arithmetic number, because the mean of its divisors is an integer number (83865075).

Almost surely, 2^612948557 is an apocalyptic number.

It is an amenable number.

612948557 is a deficient number, since it is larger than the sum of its proper divisors (57972043).

612948557 is a wasteful number, since it uses less digits than its factorization.

612948557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773023.

The product of its digits is 604800, while the sum is 47.

The square root of 612948557 is about 24757.7979028830. The cubic root of 612948557 is about 849.4568881132.

The spelling of 612948557 in words is "six hundred twelve million, nine hundred forty-eight thousand, five hundred fifty-seven".