731270164 has 24 divisors (see below), whose sum is σ = 1356362280. Its totient is φ = 343781376.

The previous prime is 731270153. The next prime is 731270173. The reversal of 731270164 is 461072137.

It can be written as a sum of positive squares in 4 ways, for example, as 400 + 731269764 = 20^2 + 27042^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70564 + ... + 80260.

It is an arithmetic number, because the mean of its divisors is an integer number (56515095).

Almost surely, 2^731270164 is an apocalyptic number.

It is an amenable number.

731270164 is a deficient number, since it is larger than the sum of its proper divisors (625092116).

731270164 is a wasteful number, since it uses less digits than its factorization.

731270164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10827 (or 10825 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 731270164 is about 27042.0073959017. The cubic root of 731270164 is about 900.9332557934.

The spelling of 731270164 in words is "seven hundred thirty-one million, two hundred seventy thousand, one hundred sixty-four".