606661001 has 4 divisors (see below), whose sum is σ = 608287812. Its totient is φ = 605034192.

The previous prime is 606660983. The next prime is 606661009. The reversal of 606661001 is 100166606.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151265401 + 455395600 = 12299^2 + 21340^2 .

It is a cyclic number.

It is not a de Polignac number, because 606661001 - 2¹⁴ = 606644617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (606661009) 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, 812846 + ... + 813591.

It is an arithmetic number, because the mean of its divisors is an integer number (152071953).

Almost surely, 2^606661001 is an apocalyptic number.

It is an amenable number.

606661001 is a deficient number, since it is larger than the sum of its proper divisors (1626811).

606661001 is a wasteful number, since it uses less digits than its factorization.

606661001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626810.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 606661001 is about 24630.4892562044. The cubic root of 606661001 is about 846.5423558544.

The spelling of 606661001 in words is "six hundred six million, six hundred sixty-one thousand, one".