723457 has 8 divisors (see below), whose sum is σ = 832832. Its totient is φ = 615600.

The previous prime is 723451. The next prime is 723467. The reversal of 723457 is 754327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 723457 - 2¹⁵ = 690689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (104104).

2⁷²³⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

723457 is a deficient number, since it is larger than the sum of its proper divisors (109375).

723457 is a wasteful number, since it uses less digits than its factorization.

723457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759.

The product of its digits is 5880, while the sum is 28.

The square root of 723457 is about 850.5627548864. The cubic root of 723457 is about 89.7713124072.

The spelling of 723457 in words is "seven hundred twenty-three thousand, four hundred fifty-seven".