6263485661 has 4 divisors (see below), whose sum is σ = 6631926012. Its totient is φ = 5895045312.

The previous prime is 6263485637. The next prime is 6263485693. The reversal of 6263485661 is 1665843626.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1665843626 = 2 ⋅832921813.

It can be written as a sum of positive squares in 2 ways, for example, as 3517201636 + 2746284025 = 59306^2 + 52405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6263485661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6263485621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184220150 + ... + 184220183.

It is an arithmetic number, because the mean of its divisors is an integer number (1657981503).

Almost surely, 2^6263485661 is an apocalyptic number.

It is an amenable number.

6263485661 is a deficient number, since it is larger than the sum of its proper divisors (368440351).

6263485661 is a wasteful number, since it uses less digits than its factorization.

6263485661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368440350.

The product of its digits is 1244160, while the sum is 47.

The square root of 6263485661 is about 79142.1863546870. The cubic root of 6263485661 is about 1843.3396402513.

The spelling of 6263485661 in words is "six billion, two hundred sixty-three million, four hundred eighty-five thousand, six hundred sixty-one".