731366 has 4 divisors (see below), whose sum is σ = 1097052. Its totient is φ = 365682.

The previous prime is 731363. The next prime is 731369. The reversal of 731366 is 663137.

731366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 663137 = 271 ⋅2447.

It is an interprime number because it is at equal distance from previous prime (731363) and next prime (731369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182840 + ... + 182843.

It is an arithmetic number, because the mean of its divisors is an integer number (274263).

2⁷³¹³⁶⁶ is an apocalyptic number.

731366 is a deficient number, since it is larger than the sum of its proper divisors (365686).

731366 is a wasteful number, since it uses less digits than its factorization.

731366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365685.

The product of its digits is 2268, while the sum is 26.

The square root of 731366 is about 855.1993919549. The cubic root of 731366 is about 90.0972611092.

It can be divided in two parts, 731 and 366, that multiplied together give a triangular number (267546 = T₇₃₁).

The spelling of 731366 in words is "seven hundred thirty-one thousand, three hundred sixty-six".