723746 has 4 divisors (see below), whose sum is σ = 1085622. Its totient is φ = 361872.

The previous prime is 723739. The next prime is 723761. The reversal of 723746 is 647327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 212521 = 715^2 + 461^2 .

It is a congruent number.

It is an unprimeable number.

723746 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180935 + ... + 180938.

2⁷²³⁷⁴⁶ is an apocalyptic number.

723746 is a deficient number, since it is larger than the sum of its proper divisors (361876).

723746 is a wasteful number, since it uses less digits than its factorization.

723746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361875.

The product of its digits is 7056, while the sum is 29.

The square root of 723746 is about 850.7326254470. The cubic root of 723746 is about 89.7832644907.

The spelling of 723746 in words is "seven hundred twenty-three thousand, seven hundred forty-six".