744624761 has 4 divisors (see below), whose sum is σ = 745617024. Its totient is φ = 743632500.

The previous prime is 744624731. The next prime is 744624779. The reversal of 744624761 is 167426447.

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, and also an emirpimes, since its reverse is a distinct semiprime: 167426447 = 757 ⋅221171.

It is a cyclic number.

It is not a de Polignac number, because 744624761 - 2¹⁴ = 744608377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744624721) 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, 495005 + ... + 496506.

It is an arithmetic number, because the mean of its divisors is an integer number (186404256).

Almost surely, 2^744624761 is an apocalyptic number.

It is an amenable number.

744624761 is a deficient number, since it is larger than the sum of its proper divisors (992263).

744624761 is an equidigital number, since it uses as much as digits as its factorization.

744624761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992262.

The product of its digits is 225792, while the sum is 41.

The square root of 744624761 is about 27287.8134155157. The cubic root of 744624761 is about 906.3845441400.

The spelling of 744624761 in words is "seven hundred forty-four million, six hundred twenty-four thousand, seven hundred sixty-one".