740669 has 4 divisors (see below), whose sum is σ = 772896. Its totient is φ = 708444.

The previous prime is 740659. The next prime is 740671. The reversal of 740669 is 966047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 966047 = 937 ⋅1031.

It is a cyclic number.

It is not a de Polignac number, because 740669 - 2⁴ = 740653 is a prime.

It is a super-2 number, since 2×740669² = 1097181135122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16079 + ... + 16124.

It is an arithmetic number, because the mean of its divisors is an integer number (193224).

2⁷⁴⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

740669 is a deficient number, since it is larger than the sum of its proper divisors (32227).

740669 is a wasteful number, since it uses less digits than its factorization.

740669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32226.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 740669 is about 860.6212872106. The cubic root of 740669 is about 90.4776661106.

The spelling of 740669 in words is "seven hundred forty thousand, six hundred sixty-nine".