740666 has 8 divisors (see below), whose sum is σ = 1141140. Its totient is φ = 360288.

The previous prime is 740659. The next prime is 740671. The reversal of 740666 is 666047.

It can be written as a sum of positive squares in 2 ways, for example, as 511225 + 229441 = 715^2 + 479^2 .

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

It is a super-2 number, since 2×740666² = 1097172247112, which contains 22 as substring.

740666 is a modest number, since divided by 666 gives 74 as remainder.

It is an unprimeable 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, 4931 + ... + 5078.

2⁷⁴⁰⁶⁶⁶ is an apocalyptic number.

740666 is a deficient number, since it is larger than the sum of its proper divisors (400474).

740666 is a wasteful number, since it uses less digits than its factorization.

740666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10048.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 740666 is about 860.6195442819. The cubic root of 740666 is about 90.4775439537.

The spelling of 740666 in words is "seven hundred forty thousand, six hundred sixty-six".