740745823 has 4 divisors (see below), whose sum is σ = 740867608. Its totient is φ = 740624040.

The previous prime is 740745793. The next prime is 740745853. The reversal of 740745823 is 328547047.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (740745793) and next prime (740745853).

It is a cyclic number.

It is not a de Polignac number, because 740745823 - 2¹³ = 740737631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740745853) 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, 51261 + ... + 64102.

It is an arithmetic number, because the mean of its divisors is an integer number (185216902).

Almost surely, 2^740745823 is an apocalyptic number.

740745823 is a deficient number, since it is larger than the sum of its proper divisors (121785).

740745823 is a wasteful number, since it uses less digits than its factorization.

740745823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121784.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 740745823 is about 27216.6460644952. The cubic root of 740745823 is about 904.8079414997.

It can be divided in two parts, 74074 and 5823, that added together give a palindrome (79897).

The spelling of 740745823 in words is "seven hundred forty million, seven hundred forty-five thousand, eight hundred twenty-three".