613157297 has 8 divisors (see below), whose sum is σ = 616395816. Its totient is φ = 609927552.

The previous prime is 613157287. The next prime is 613157317. The reversal of 613157297 is 792751316.

It can be written as a sum of positive squares in 4 ways, for example, as 4844401 + 608312896 = 2201^2 + 24664^2 .

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 613157297 - 2¹² = 613153201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613157287) 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, 172583 + ... + 176099.

It is an arithmetic number, because the mean of its divisors is an integer number (77049477).

Almost surely, 2^613157297 is an apocalyptic number.

It is an amenable number.

613157297 is a deficient number, since it is larger than the sum of its proper divisors (3238519).

613157297 is a wasteful number, since it uses less digits than its factorization.

613157297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387.

The product of its digits is 79380, while the sum is 41.

The square root of 613157297 is about 24762.0131855227. The cubic root of 613157297 is about 849.5533048539.

The spelling of 613157297 in words is "six hundred thirteen million, one hundred fifty-seven thousand, two hundred ninety-seven".