731069 has 4 divisors (see below), whose sum is σ = 743520. Its totient is φ = 718620.

The previous prime is 731057. The next prime is 731113. The reversal of 731069 is 960137.

731069 = T₁₂₇ + T₁₂₈ + ... + T₁₈₅.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 731069 - 2⁴ = 731053 is a prime.

It is a super-2 number, since 2×731069² = 1068923765522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731369) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6137 + ... + 6254.

It is an arithmetic number, because the mean of its divisors is an integer number (185880).

2⁷³¹⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

731069 is a deficient number, since it is larger than the sum of its proper divisors (12451).

731069 is a wasteful number, since it uses less digits than its factorization.

731069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12450.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 731069 is about 855.0257306070. The cubic root of 731069 is about 90.0850636096.

The spelling of 731069 in words is "seven hundred thirty-one thousand, sixty-nine".