240685881 has 8 divisors (see below), whose sum is σ = 339791904. Its totient is φ = 151018560.

The previous prime is 240685873. The next prime is 240685883. The reversal of 240685881 is 188586042.

240685881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 240685881 - 2³ = 240685873 is a prime.

It is a super-2 number, since 2×240685881² = 115859386625492322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (240685883) 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, 2359615 + ... + 2359716.

It is an arithmetic number, because the mean of its divisors is an integer number (42473988).

Almost surely, 2^240685881 is an apocalyptic number.

It is an amenable number.

240685881 is a deficient number, since it is larger than the sum of its proper divisors (99106023).

240685881 is a wasteful number, since it uses less digits than its factorization.

240685881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719351.

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 240685881 is about 15514.0543056933. The cubic root of 240685881 is about 622.0379358451.

It can be divided in two parts, 240 and 685881, that multiplied together give a triangular number (164611440 = T₁₈₁₄₄).

The spelling of 240685881 in words is "two hundred forty million, six hundred eighty-five thousand, eight hundred eighty-one".