740685 has 24 divisors (see below), whose sum is σ = 1312416. Its totient is φ = 353760.

The previous prime is 740681. The next prime is 740687. The reversal of 740685 is 586047.

It is a happy number.

It is not a de Polignac number, because 740685 - 2² = 740681 is a prime.

It is a super-2 number, since 2×740685² = 1097228538450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740681) 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 23 ways as a sum of consecutive naturals, for example, 11022 + ... + 11088.

It is an arithmetic number, because the mean of its divisors is an integer number (54684).

2⁷⁴⁰⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

740685 is a deficient number, since it is larger than the sum of its proper divisors (571731).

740685 is a wasteful number, since it uses less digits than its factorization.

740685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 740685 is about 860.6305827706. The cubic root of 740685 is about 90.4783176082.

The spelling of 740685 in words is "seven hundred forty thousand, six hundred eighty-five".