740991 has 8 divisors (see below), whose sum is σ = 1031040. Its totient is φ = 472472.

The previous prime is 740989. The next prime is 741001. The reversal of 740991 is 199047.

740991 = T₁₅₆ + T₁₅₇ + ... + T₂₀₁.

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 740991 - 2¹ = 740989 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5301 + ... + 5438.

It is an arithmetic number, because the mean of its divisors is an integer number (128880).

2⁷⁴⁰⁹⁹¹ is an apocalyptic number.

740991 is a deficient number, since it is larger than the sum of its proper divisors (290049).

740991 is a wasteful number, since it uses less digits than its factorization.

740991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10765.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 740991 is about 860.8083410377. The cubic root of 740991 is about 90.4907756947.

The spelling of 740991 in words is "seven hundred forty thousand, nine hundred ninety-one".