744530761 has 8 divisors (see below), whose sum is σ = 823473224. Its totient is φ = 668684160.

The previous prime is 744530749. The next prime is 744530783. The reversal of 744530761 is 167035447.

It is the 11140-th star number.

It can be written as a sum of positive squares in 4 ways, for example, as 2295225 + 742235536 = 1515^2 + 27244^2 .

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 744530761 - 2⁵ = 744530729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 744530761.

It is not an unprimeable number, because it can be changed into a prime (744530711) 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, 773460 + ... + 774421.

It is an arithmetic number, because the mean of its divisors is an integer number (102934153).

Almost surely, 2^744530761 is an apocalyptic number.

It is an amenable number.

744530761 is a deficient number, since it is larger than the sum of its proper divisors (78942463).

744530761 is a wasteful number, since it uses less digits than its factorization.

744530761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547931.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 744530761 is about 27286.0909805710. The cubic root of 744530761 is about 906.3464024535.

The spelling of 744530761 in words is "seven hundred forty-four million, five hundred thirty thousand, seven hundred sixty-one".