6404767740 has 192 divisors, whose sum is σ = 23558169600. Its totient is φ = 1413441792.

The previous prime is 6404767729. The next prime is 6404767757. The reversal of 6404767740 is 477674046.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 63 ways as a sum of consecutive naturals, for example, 80407 + ... + 138833.

It is an arithmetic number, because the mean of its divisors is an integer number (122698800).

Almost surely, 2^6404767740 is an apocalyptic number.

6404767740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6404767740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11779084800).

6404767740 is an abundant number, since it is smaller than the sum of its proper divisors (17153401860).

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

6404767740 is a wasteful number, since it uses less digits than its factorization.

6404767740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58481 (or 58473 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 45.

The square root of 6404767740 is about 80029.7928274215. The cubic root of 6404767740 is about 1857.0964583561.

The spelling of 6404767740 in words is "six billion, four hundred four million, seven hundred sixty-seven thousand, seven hundred forty".