723455841 has 4 divisors (see below), whose sum is σ = 964607792. Its totient is φ = 482303892.

The previous prime is 723455839. The next prime is 723455861. The reversal of 723455841 is 148554327.

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 723455841 - 2¹ = 723455839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 723455841.

It is not an unprimeable number, because it can be changed into a prime (723455861) 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, 120575971 + ... + 120575976.

It is an arithmetic number, because the mean of its divisors is an integer number (241151948).

Almost surely, 2^723455841 is an apocalyptic number.

It is an amenable number.

723455841 is a deficient number, since it is larger than the sum of its proper divisors (241151951).

723455841 is a wasteful number, since it uses less digits than its factorization.

723455841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241151950.

The product of its digits is 134400, while the sum is 39.

The square root of 723455841 is about 26897.1344384490. The cubic root of 723455841 is about 897.7126446842.

The spelling of 723455841 in words is "seven hundred twenty-three million, four hundred fifty-five thousand, eight hundred forty-one".