6446340732 has 96 divisors (see below), whose sum is σ = 17004395520. Its totient is φ = 1897072320.

The previous prime is 6446340727. The next prime is 6446340739. The reversal of 6446340732 is 2370436446.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446340739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 601057 + ... + 611687.

It is an arithmetic number, because the mean of its divisors is an integer number (177129120).

Almost surely, 2^6446340732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6446340732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8502197760).

6446340732 is an abundant number, since it is smaller than the sum of its proper divisors (10558054788).

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

6446340732 is a wasteful number, since it uses less digits than its factorization.

6446340732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700 (or 10672 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 39.

The square root of 6446340732 is about 80289.1071814851. The cubic root of 6446340732 is about 1861.1058991632.

The spelling of 6446340732 in words is "six billion, four hundred forty-six million, three hundred forty thousand, seven hundred thirty-two".