340001664 has 32 divisors (see below), whose sum is σ = 903130440. Its totient is φ = 113333760.

The previous prime is 340001647. The next prime is 340001671. The reversal of 340001664 is 466100043.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×340001664² = 231202263045537792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442327 + ... + 443094.

Almost surely, 2^340001664 is an apocalyptic number.

It is an amenable number.

340001664 is an abundant number, since it is smaller than the sum of its proper divisors (563128776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340001664 is an equidigital number, since it uses as much as digits as its factorization.

340001664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885438 (or 885426 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 340001664 is about 18439.1340360658. The cubic root of 340001664 is about 697.9543433107.

The spelling of 340001664 in words is "three hundred forty million, one thousand, six hundred sixty-four".