744497731 has 8 divisors (see below), whose sum is σ = 760985280. Its totient is φ = 728100672.

The previous prime is 744497723. The next prime is 744497737. The reversal of 744497731 is 137794447.

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 744497731 - 2³ = 744497723 is a prime.

It is a super-2 number, since 2×744497731² = 1108553742928296722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744497737) 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, 5851 + ... + 39028.

It is an arithmetic number, because the mean of its divisors is an integer number (95123160).

Almost surely, 2^744497731 is an apocalyptic number.

744497731 is a deficient number, since it is larger than the sum of its proper divisors (16487549).

744497731 is a wasteful number, since it uses less digits than its factorization.

744497731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45245.

The product of its digits is 592704, while the sum is 46.

The square root of 744497731 is about 27285.4857204339. The cubic root of 744497731 is about 906.3329993519.

The spelling of 744497731 in words is "seven hundred forty-four million, four hundred ninety-seven thousand, seven hundred thirty-one".