6386699340 has 480 divisors, whose sum is σ = 24448241664. Its totient is φ = 1364014080.

The previous prime is 6386699327. The next prime is 6386699359. The reversal of 6386699340 is 439966836.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 12258280 + ... + 12258800.

Almost surely, 2^6386699340 is an apocalyptic number.

6386699340 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 6386699340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12224120832).

6386699340 is an abundant number, since it is smaller than the sum of its proper divisors (18061542324).

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

6386699340 is a wasteful number, since it uses less digits than its factorization.

6386699340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The square root of 6386699340 is about 79916.8276397406. The cubic root of 6386699340 is about 1855.3484707018.

The spelling of 6386699340 in words is "six billion, three hundred eighty-six million, six hundred ninety-nine thousand, three hundred forty".