601256661 has 8 divisors (see below), whose sum is σ = 804724800. Its totient is φ = 399313152.

The previous prime is 601256657. The next prime is 601256671. The reversal of 601256661 is 166652106.

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

It is not a de Polignac number, because 601256661 - 2² = 601256657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601256651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380236 + ... + 381813.

It is an arithmetic number, because the mean of its divisors is an integer number (100590600).

Almost surely, 2^601256661 is an apocalyptic number.

It is an amenable number.

601256661 is a deficient number, since it is larger than the sum of its proper divisors (203468139).

601256661 is a wasteful number, since it uses less digits than its factorization.

601256661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762315.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 601256661 is about 24520.5354957839. The cubic root of 601256661 is about 844.0210929830.

The spelling of 601256661 in words is "six hundred one million, two hundred fifty-six thousand, six hundred sixty-one".