240377691 has 4 divisors (see below), whose sum is σ = 320503592. Its totient is φ = 160251792.

The previous prime is 240377681. The next prime is 240377699. The reversal of 240377691 is 196773042.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-240377691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240377699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40062946 + ... + 40062951.

It is an arithmetic number, because the mean of its divisors is an integer number (80125898).

Almost surely, 2^240377691 is an apocalyptic number.

240377691 is a deficient number, since it is larger than the sum of its proper divisors (80125901).

240377691 is an equidigital number, since it uses as much as digits as its factorization.

240377691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80125900.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 240377691 is about 15504.1185173489. The cubic root of 240377691 is about 621.7723230429.

The spelling of 240377691 in words is "two hundred forty million, three hundred seventy-seven thousand, six hundred ninety-one".