340404663 has 8 divisors (see below), whose sum is σ = 459341568. Its totient is φ = 224202104.

The previous prime is 340404653. The next prime is 340404667. The reversal of 340404663 is 366404043.

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

It is a cyclic number.

It is not a de Polignac number, because 340404663 - 2⁶ = 340404599 is a prime.

It is a super-3 number, since 3×340404663³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340404663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340404667) 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, 683295 + ... + 683792.

It is an arithmetic number, because the mean of its divisors is an integer number (57417696).

Almost surely, 2^340404663 is an apocalyptic number.

340404663 is a deficient number, since it is larger than the sum of its proper divisors (118936905).

340404663 is a wasteful number, since it uses less digits than its factorization.

340404663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367173.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 340404663 is about 18450.0586177931. The cubic root of 340404663 is about 698.2299927903.

The spelling of 340404663 in words is "three hundred forty million, four hundred four thousand, six hundred sixty-three".