740545457 has 4 divisors (see below), whose sum is σ = 741829476. Its totient is φ = 739261440.

The previous prime is 740545451. The next prime is 740545469. The reversal of 740545457 is 754545047.

740545457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754545047 = 53 ⋅14236699.

It can be written as a sum of positive squares in 2 ways, for example, as 682724641 + 57820816 = 26129^2 + 7604^2 .

It is a cyclic number.

It is not a de Polignac number, because 740545457 - 2¹⁰ = 740544433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740545451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641144 + ... + 642297.

It is an arithmetic number, because the mean of its divisors is an integer number (185457369).

Almost surely, 2^740545457 is an apocalyptic number.

It is an amenable number.

740545457 is a deficient number, since it is larger than the sum of its proper divisors (1284019).

740545457 is a wasteful number, since it uses less digits than its factorization.

740545457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284018.

The product of its (nonzero) digits is 392000, while the sum is 41.

The square root of 740545457 is about 27212.9648697087. The cubic root of 740545457 is about 904.7263529660.

The spelling of 740545457 in words is "seven hundred forty million, five hundred forty-five thousand, four hundred fifty-seven".