6446699000 has 64 divisors (see below), whose sum is σ = 17240333760. Its totient is φ = 2210294400.

The previous prime is 6446698987. The next prime is 6446699009. The reversal of 6446699000 is 9966446.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446699009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453479 + ... + 467478.

It is an arithmetic number, because the mean of its divisors is an integer number (269380215).

Almost surely, 2^6446699000 is an apocalyptic number.

It is an amenable number.

6446699000 is an abundant number, since it is smaller than the sum of its proper divisors (10793634760).

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

6446699000 is a wasteful number, since it uses less digits than its factorization.

6446699000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920985 (or 920971 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 6446699000 is about 80291.3382626046. The cubic root of 6446699000 is about 1861.1403767252.

The spelling of 6446699000 in words is "six billion, four hundred forty-six million, six hundred ninety-nine thousand".