340367721 has 8 divisors (see below), whose sum is σ = 454022400. Its totient is φ = 226812432.

The previous prime is 340367711. The next prime is 340367801. The reversal of 340367721 is 127763043.

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

It is not a de Polignac number, because 340367721 - 2⁵ = 340367689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (340367701) 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, 16450 + ... + 30843.

It is an arithmetic number, because the mean of its divisors is an integer number (56752800).

Almost surely, 2^340367721 is an apocalyptic number.

It is an amenable number.

340367721 is a deficient number, since it is larger than the sum of its proper divisors (113654679).

340367721 is a wasteful number, since it uses less digits than its factorization.

340367721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49695.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 340367721 is about 18449.0574555992. The cubic root of 340367721 is about 698.2047336910.

The spelling of 340367721 in words is "three hundred forty million, three hundred sixty-seven thousand, seven hundred twenty-one".