744898561 has 8 divisors (see below), whose sum is σ = 819016704. Its totient is φ = 671847120.

The previous prime is 744898549. The next prime is 744898577. The reversal of 744898561 is 165898447.

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 744898561 - 2⁵ = 744898529 is a prime.

It is a super-3 number, since 3×744898561³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 744898499 and 744898508.

It is not an unprimeable number, because it can be changed into a prime (744398561) 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, 265210 + ... + 268003.

It is an arithmetic number, because the mean of its divisors is an integer number (102377088).

Almost surely, 2^744898561 is an apocalyptic number.

It is an amenable number.

744898561 is a deficient number, since it is larger than the sum of its proper divisors (74118143).

744898561 is a wasteful number, since it uses less digits than its factorization.

744898561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533351.

The product of its digits is 1935360, while the sum is 52.

The square root of 744898561 is about 27292.8298459504. The cubic root of 744898561 is about 906.4956236573.

The spelling of 744898561 in words is "seven hundred forty-four million, eight hundred ninety-eight thousand, five hundred sixty-one".