723005401 has 4 divisors (see below), whose sum is σ = 723961252. Its totient is φ = 722049552.

The previous prime is 723005399. The next prime is 723005453. The reversal of 723005401 is 104500327.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161315401 + 561690000 = 12701^2 + 23700^2 .

It is a cyclic number.

It is not a de Polignac number, because 723005401 - 2¹ = 723005399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723008401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476790 + ... + 478303.

It is an arithmetic number, because the mean of its divisors is an integer number (180990313).

Almost surely, 2^723005401 is an apocalyptic number.

It is an amenable number.

723005401 is a deficient number, since it is larger than the sum of its proper divisors (955851).

723005401 is an equidigital number, since it uses as much as digits as its factorization.

723005401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955850.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 723005401 is about 26888.7597519856. The cubic root of 723005401 is about 897.5262939253.

Adding to 723005401 its reverse (104500327), we get a palindrome (827505728).

The spelling of 723005401 in words is "seven hundred twenty-three million, five thousand, four hundred one".