240791691 has 8 divisors (see below), whose sum is σ = 366920704. Its totient is φ = 137595240.

The previous prime is 240791659. The next prime is 240791699. The reversal of 240791691 is 196197042.

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

It is not a de Polignac number, because 240791691 - 2⁵ = 240791659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240791699) 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 7 ways as a sum of consecutive naturals, for example, 5733115 + ... + 5733156.

It is an arithmetic number, because the mean of its divisors is an integer number (45865088).

Almost surely, 2^240791691 is an apocalyptic number.

240791691 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

240791691 is a deficient number, since it is larger than the sum of its proper divisors (126129013).

240791691 is a wasteful number, since it uses less digits than its factorization.

240791691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466281.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 240791691 is about 15517.4640647240. The cubic root of 240791691 is about 622.1290756483.

The spelling of 240791691 in words is "two hundred forty million, seven hundred ninety-one thousand, six hundred ninety-one".