723061553 has 4 divisors (see below), whose sum is σ = 747994740. Its totient is φ = 698128368.

The previous prime is 723061531. The next prime is 723061567. The reversal of 723061553 is 355160327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355160327 = 41 ⋅8662447.

It can be written as a sum of positive squares in 2 ways, for example, as 163123984 + 559937569 = 12772^2 + 23663^2 .

It is not a de Polignac number, because 723061553 - 2¹⁶ = 722996017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723060553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12466550 + ... + 12466607.

It is an arithmetic number, because the mean of its divisors is an integer number (186998685).

Almost surely, 2^723061553 is an apocalyptic number.

It is an amenable number.

723061553 is a deficient number, since it is larger than the sum of its proper divisors (24933187).

723061553 is a wasteful number, since it uses less digits than its factorization.

723061553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24933186.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 723061553 is about 26889.8038854879. The cubic root of 723061553 is about 897.5495286949.

The spelling of 723061553 in words is "seven hundred twenty-three million, sixty-one thousand, five hundred fifty-three".