6445061762 has 4 divisors (see below), whose sum is σ = 9667592646. Its totient is φ = 3222530880.

The previous prime is 6445061759. The next prime is 6445061773. The reversal of 6445061762 is 2671605446.

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: 2671605446 = 2 ⋅1335802723.

It can be written as a sum of positive squares in only one way, i.e., 6445038961 + 22801 = 80281^2 + 151^2 .

It is a super-2 number, since 2×6445061762² = 83077642231989089288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611265439 + ... + 1611265442.

Almost surely, 2^6445061762 is an apocalyptic number.

6445061762 is a deficient number, since it is larger than the sum of its proper divisors (3222530884).

6445061762 is a wasteful number, since it uses less digits than its factorization.

6445061762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222530883.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 6445061762 is about 80281.1420073232. The cubic root of 6445061762 is about 1860.9828083459.

The spelling of 6445061762 in words is "six billion, four hundred forty-five million, sixty-one thousand, seven hundred sixty-two".