740645 has 8 divisors (see below), whose sum is σ = 895104. Its totient is φ = 588304.

The previous prime is 740603. The next prime is 740651. The reversal of 740645 is 546047.

740645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 740645 - 2⁶ = 740581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392 + ... + 1278.

It is an arithmetic number, because the mean of its divisors is an integer number (111888).

2⁷⁴⁰⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

740645 is a deficient number, since it is larger than the sum of its proper divisors (154459).

740645 is a wasteful number, since it uses less digits than its factorization.

740645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 740645 is about 860.6073436824. The cubic root of 740645 is about 90.4766888466.

The spelling of 740645 in words is "seven hundred forty thousand, six hundred forty-five".