740855823 has 4 divisors (see below), whose sum is σ = 987807768. Its totient is φ = 493903880.

The previous prime is 740855821. The next prime is 740855827. The reversal of 740855823 is 328558047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328558047 = 3 ⋅109519349.

It is a cyclic number.

It is not a de Polignac number, because 740855823 - 2¹ = 740855821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740855821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123475968 + ... + 123475973.

It is an arithmetic number, because the mean of its divisors is an integer number (246951942).

Almost surely, 2^740855823 is an apocalyptic number.

740855823 is a deficient number, since it is larger than the sum of its proper divisors (246951945).

740855823 is a wasteful number, since it uses less digits than its factorization.

740855823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246951944.

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 740855823 is about 27218.6668115836. Note that the first 3 decimals coincide. The cubic root of 740855823 is about 904.8527269687.

The spelling of 740855823 in words is "seven hundred forty million, eight hundred fifty-five thousand, eight hundred twenty-three".