740786 has 8 divisors (see below), whose sum is σ = 1118124. Its totient is φ = 368080.

The previous prime is 740749. The next prime is 740801. The reversal of 740786 is 687047.

It can be written as a sum of positive squares in 2 ways, for example, as 555025 + 185761 = 745^2 + 431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 740786.

It is an unprimeable number.

740786 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 725 + ... + 1416.

2⁷⁴⁰⁷⁸⁶ is an apocalyptic number.

740786 is a deficient number, since it is larger than the sum of its proper divisors (377338).

740786 is a wasteful number, since it uses less digits than its factorization.

740786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 740786 is about 860.6892586759. The cubic root of 740786 is about 90.4824299703.

The spelling of 740786 in words is "seven hundred forty thousand, seven hundred eighty-six".