340666481 has 4 divisors (see below), whose sum is σ = 347914752. Its totient is φ = 333418212.

The previous prime is 340666477. The next prime is 340666549. The reversal of 340666481 is 184666043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340666481 - 2² = 340666477 is a prime.

It is a super-2 number, since 2×340666481² = 232107302553846722, 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 (340666681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3624065 + ... + 3624158.

It is an arithmetic number, because the mean of its divisors is an integer number (86978688).

Almost surely, 2^340666481 is an apocalyptic number.

It is an amenable number.

340666481 is a deficient number, since it is larger than the sum of its proper divisors (7248271).

340666481 is an equidigital number, since it uses as much as digits as its factorization.

340666481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248270.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 340666481 is about 18457.1525702097. The cubic root of 340666481 is about 698.4089585445.

The spelling of 340666481 in words is "three hundred forty million, six hundred sixty-six thousand, four hundred eighty-one".