6307661 has 2 divisors, whose sum is σ = 6307662. Its totient is φ = 6307660.

The previous prime is 6307657. The next prime is 6307673. The reversal of 6307661 is 1667036.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5317636 + 990025 = 2306^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 6307661 - 2² = 6307657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6307621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3153830 + 3153831.

It is an arithmetic number, because the mean of its divisors is an integer number (3153831).

Almost surely, 2^6307661 is an apocalyptic number.

It is an amenable number.

6307661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6307661 is an equidigital number, since it uses as much as digits as its factorization.

6307661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 6307661 is about 2511.5057236646. The cubic root of 6307661 is about 184.7663082854.

The spelling of 6307661 in words is "six million, three hundred seven thousand, six hundred sixty-one".