600670661 has 2 divisors, whose sum is σ = 600670662. Its totient is φ = 600670660.

The previous prime is 600670633. The next prime is 600670711. The reversal of 600670661 is 166076006.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472845025 + 127825636 = 21745^2 + 11306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-600670661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (600670261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300335330 + 300335331.

It is an arithmetic number, because the mean of its divisors is an integer number (300335331).

Almost surely, 2^600670661 is an apocalyptic number.

It is an amenable number.

600670661 is a deficient number, since it is larger than the sum of its proper divisors (1).

600670661 is an equidigital number, since it uses as much as digits as its factorization.

600670661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 600670661 is about 24508.5834147957. The cubic root of 600670661 is about 843.7468023948.

It can be divided in two parts, 6006 and 70661, that added together give a palindrome (76667).

The spelling of 600670661 in words is "six hundred million, six hundred seventy thousand, six hundred sixty-one".