6446636346 has 32 divisors (see below), whose sum is σ = 13023790848. Its totient is φ = 2127228480.

The previous prime is 6446636321. The next prime is 6446636347. The reversal of 6446636346 is 6436366446.

It is a junction number, because it is equal to n+sod(n) for n = 6446636295 and 6446636304.

It is not an unprimeable number, because it can be changed into a prime (6446636347) 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, 242656 + ... + 267908.

It is an arithmetic number, because the mean of its divisors is an integer number (406993464).

Almost surely, 2^6446636346 is an apocalyptic number.

6446636346 is an abundant number, since it is smaller than the sum of its proper divisors (6577154502).

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

6446636346 is a wasteful number, since it uses less digits than its factorization.

6446636346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25686.

The product of its digits is 4478976, while the sum is 48.

The square root of 6446636346 is about 80290.9480950375. The cubic root of 6446636346 is about 1861.1343473724.

The spelling of 6446636346 in words is "six billion, four hundred forty-six million, six hundred thirty-six thousand, three hundred forty-six".