340618881 has 8 divisors (see below), whose sum is σ = 455270560. Its totient is φ = 226523232.

The previous prime is 340618877. The next prime is 340618913. The reversal of 340618881 is 188816043.

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

It is not a de Polignac number, because 340618881 - 2² = 340618877 is a prime.

It is a super-2 number, since 2×340618881² = 232042444187384322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (340618081) 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, 137575 + ... + 140028.

It is an arithmetic number, because the mean of its divisors is an integer number (56908820).

Almost surely, 2^340618881 is an apocalyptic number.

It is an amenable number.

340618881 is a deficient number, since it is larger than the sum of its proper divisors (114651679).

340618881 is a wasteful number, since it uses less digits than its factorization.

340618881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278015.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 340618881 is about 18455.8630521577. The cubic root of 340618881 is about 698.3764283752.

The spelling of 340618881 in words is "three hundred forty million, six hundred eighteen thousand, eight hundred eighty-one".