731289066 has 32 divisors (see below), whose sum is σ = 1496880000. Its totient is φ = 238109760.

The previous prime is 731289061. The next prime is 731289067. The reversal of 731289066 is 660982137.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (731289061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 38560 + ... + 54308.

It is an arithmetic number, because the mean of its divisors is an integer number (46777500).

Almost surely, 2^731289066 is an apocalyptic number.

731289066 is an abundant number, since it is smaller than the sum of its proper divisors (765590934).

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

731289066 is a wasteful number, since it uses less digits than its factorization.

731289066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15934.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 731289066 is about 27042.3568869283. The cubic root of 731289066 is about 900.9410182203.

The spelling of 731289066 in words is "seven hundred thirty-one million, two hundred eighty-nine thousand, sixty-six".