6440073877 has 8 divisors (see below), whose sum is σ = 6675840000. Its totient is φ = 6205220784.

The previous prime is 6440073851. The next prime is 6440073907. The reversal of 6440073877 is 7783700446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6440073877 - 2²⁷ = 6305856149 is a prime.

It is a super-2 number, since 2×6440073877² = 82949103082435622258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440073077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213877 + ... + 242122.

It is an arithmetic number, because the mean of its divisors is an integer number (834480000).

Almost surely, 2^6440073877 is an apocalyptic number.

It is an amenable number.

6440073877 is a deficient number, since it is larger than the sum of its proper divisors (235766123).

6440073877 is a wasteful number, since it uses less digits than its factorization.

6440073877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456515.

The product of its (nonzero) digits is 790272, while the sum is 46.

The square root of 6440073877 is about 80250.0708847039. The cubic root of 6440073877 is about 1860.5026079395.

The spelling of 6440073877 in words is "six billion, four hundred forty million, seventy-three thousand, eight hundred seventy-seven".