744634945 has 8 divisors (see below), whose sum is σ = 895792680. Its totient is φ = 594220800.

The previous prime is 744634931. The next prime is 744634963. The reversal of 744634945 is 549436447.

It is a Cunningham number, because it is equal to 27288²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 268042384 + 476592561 = 16372^2 + 21831^2 .

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

It is not a de Polignac number, because 744634945 - 2⁷ = 744634817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 744634895 and 744634904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183690 + ... + 187699.

It is an arithmetic number, because the mean of its divisors is an integer number (111974085).

Almost surely, 2^744634945 is an apocalyptic number.

It is an amenable number.

744634945 is a deficient number, since it is larger than the sum of its proper divisors (151157735).

744634945 is a wasteful number, since it uses less digits than its factorization.

744634945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371795.

The product of its digits is 1451520, while the sum is 46.

The square root of 744634945 is about 27288.0000183231. Note that the first 4 decimals coincide. The cubic root of 744634945 is about 906.3886762338.

The spelling of 744634945 in words is "seven hundred forty-four million, six hundred thirty-four thousand, nine hundred forty-five".