6426062640 has 80 divisors (see below), whose sum is σ = 22134223200. Its totient is φ = 1713616128.

The previous prime is 6426062581. The next prime is 6426062651. The reversal of 6426062640 is 462606246.

6426062640 is a `hidden beast` number, since 6 + 4 + 2 + 6 + 0 + 6 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6426062595 and 6426062604.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1485355 + ... + 1489674.

It is an arithmetic number, because the mean of its divisors is an integer number (276677790).

Almost surely, 2^6426062640 is an apocalyptic number.

6426062640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6426062640 is an abundant number, since it is smaller than the sum of its proper divisors (15708160560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6426062640 is a wasteful number, since it uses less digits than its factorization.

6426062640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975051 (or 2975039 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 6426062640 is about 80162.7260015526. The cubic root of 6426062640 is about 1859.1523713264.

Adding to 6426062640 its reverse (462606246), we get a palindrome (6888668886).

The spelling of 6426062640 in words is "six billion, four hundred twenty-six million, sixty-two thousand, six hundred forty".