740851 has 4 divisors (see below), whose sum is σ = 760912. Its totient is φ = 720792.

The previous prime is 740849. The next prime is 740891. The reversal of 740851 is 158047.

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

It is a cyclic number.

It is not a de Polignac number, because 740851 - 2¹ = 740849 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9975 + ... + 10048.

It is an arithmetic number, because the mean of its divisors is an integer number (190228).

2⁷⁴⁰⁸⁵¹ is an apocalyptic number.

740851 is a deficient number, since it is larger than the sum of its proper divisors (20061).

740851 is a wasteful number, since it uses less digits than its factorization.

740851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20060.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 740851 is about 860.7270182816. The cubic root of 740851 is about 90.4850763422.

Adding to 740851 its reverse (158047), we get a palindrome (898898).

The spelling of 740851 in words is "seven hundred forty thousand, eight hundred fifty-one".