6440774582 has 48 divisors (see below), whose sum is σ = 10994320512. Its totient is φ = 2824800000.

The previous prime is 6440774573. The next prime is 6440774591. The reversal of 6440774582 is 2854770446.

It is an interprime number because it is at equal distance from previous prime (6440774573) and next prime (6440774591).

It is a super-2 number, since 2×6440774582² = 82967154432274549448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3007232 + ... + 3009372.

It is an arithmetic number, because the mean of its divisors is an integer number (229048344).

Almost surely, 2^6440774582 is an apocalyptic number.

6440774582 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6440774582 is a deficient number, since it is larger than the sum of its proper divisors (4553545930).

6440774582 is a wasteful number, since it uses less digits than its factorization.

6440774582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2586 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 47.

The square root of 6440774582 is about 80254.4365253411. The cubic root of 6440774582 is about 1860.5700821242.

The spelling of 6440774582 in words is "six billion, four hundred forty million, seven hundred seventy-four thousand, five hundred eighty-two".