739997 has 4 divisors (see below), whose sum is σ = 742140. Its totient is φ = 737856.

The previous prime is 739969. The next prime is 740011. The reversal of 739997 is 799937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799937 = 251 ⋅3187.

It can be written as a sum of positive squares in 2 ways, for example, as 109561 + 630436 = 331^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 739997 - 2¹² = 735901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (739957) 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 3 ways as a sum of consecutive naturals, for example, 422 + ... + 1287.

It is an arithmetic number, because the mean of its divisors is an integer number (185535).

2⁷³⁹⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

739997 is a deficient number, since it is larger than the sum of its proper divisors (2143).

739997 is a wasteful number, since it uses less digits than its factorization.

739997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142.

The product of its digits is 107163, while the sum is 44.

The square root of 739997 is about 860.2307829879. The cubic root of 739997 is about 90.4502947346.

It can be divided in two parts, 7 and 39997, that added together give a palindrome (40004).

The spelling of 739997 in words is "seven hundred thirty-nine thousand, nine hundred ninety-seven".