601608101956 has 81 divisors (see below), whose sum is σ = 1119918110493. Its totient is φ = 282765131040.

The previous prime is 601608101953. The next prime is 601608101959. The reversal of 601608101956 is 659101806106.

The square root of 601608101956 is 775634.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (601608101953) and next prime (601608101959).

It can be written as a sum of positive squares in only one way, i.e., 315468695556 + 286139406400 = 561666^2 + 534920^2 .

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (601608101951) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1934431041 + ... + 1934431351.

Almost surely, 2^601608101956 is an apocalyptic number.

601608101956 is the 775634-th square number.

It is an amenable number.

601608101956 is a deficient number, since it is larger than the sum of its proper divisors (518310008537).

601608101956 is an equidigital number, since it uses as much as digits as its factorization.

601608101956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 601608101956 in words is "six hundred one billion, six hundred eight million, one hundred one thousand, nine hundred fifty-six".