744751057 has 4 divisors (see below), whose sum is σ = 745881840. Its totient is φ = 743620276.

The previous prime is 744751027. The next prime is 744751067. The reversal of 744751057 is 750157447.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 744751057 - 2²³ = 736362449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744751027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564403 + ... + 565720.

It is an arithmetic number, because the mean of its divisors is an integer number (186470460).

Almost surely, 2^744751057 is an apocalyptic number.

It is an amenable number.

744751057 is a deficient number, since it is larger than the sum of its proper divisors (1130783).

744751057 is a wasteful number, since it uses less digits than its factorization.

744751057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130782.

The product of its (nonzero) digits is 137200, while the sum is 40.

The square root of 744751057 is about 27290.1274639750. The cubic root of 744751057 is about 906.4357852828.

The spelling of 744751057 in words is "seven hundred forty-four million, seven hundred fifty-one thousand, fifty-seven".