740091 has 16 divisors (see below), whose sum is σ = 1104768. Its totient is φ = 436800.

The previous prime is 740087. The next prime is 740099. The reversal of 740091 is 190047.

It is not a de Polignac number, because 740091 - 2² = 740087 is a prime.

740091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (740099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1080 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (69048).

2⁷⁴⁰⁰⁹¹ is an apocalyptic number.

740091 is a deficient number, since it is larger than the sum of its proper divisors (364677).

740091 is a wasteful number, since it uses less digits than its factorization.

740091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 740091 is about 860.2854177539. The cubic root of 740091 is about 90.4541244654.

The spelling of 740091 in words is "seven hundred forty thousand, ninety-one".