6264909661 has 2 divisors, whose sum is σ = 6264909662. Its totient is φ = 6264909660.

The previous prime is 6264909641. The next prime is 6264909689. The reversal of 6264909661 is 1669094626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3683761636 + 2581148025 = 60694^2 + 50805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6264909661 is a prime.

It is a super-2 number, since 2×6264909661² = 78498186120982269842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6264909601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132454830 + 3132454831.

It is an arithmetic number, because the mean of its divisors is an integer number (3132454831).

Almost surely, 2^6264909661 is an apocalyptic number.

It is an amenable number.

6264909661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6264909661 is an equidigital number, since it uses as much as digits as its factorization.

6264909661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 6264909661 is about 79151.1823095524. The cubic root of 6264909661 is about 1843.4793237487.

The spelling of 6264909661 in words is "six billion, two hundred sixty-four million, nine hundred nine thousand, six hundred sixty-one".