709447800366 has 128 divisors (see below), whose sum is σ = 1733427072000. Its totient is φ = 214209733248.

The previous prime is 709447800331. The next prime is 709447800377. The reversal of 709447800366 is 663008744907.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2948916 + ... + 3180408.

It is an arithmetic number, because the mean of its divisors is an integer number (13542399000).

Almost surely, 2^709447800366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 709447800366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866713536000).

709447800366 is an abundant number, since it is smaller than the sum of its proper divisors (1023979271634).

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

709447800366 is a wasteful number, since it uses less digits than its factorization.

709447800366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231655 (or 231649 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 709447800366 in words is "seven hundred nine billion, four hundred forty-seven million, eight hundred thousand, three hundred sixty-six".