340637 has 8 divisors (see below), whose sum is σ = 375840. Its totient is φ = 306160.

The previous prime is 340633. The next prime is 340643. The reversal of 340637 is 736043.

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 340637 - 2² = 340633 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340637.

It is not an unprimeable number, because it can be changed into a prime (340633) 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, 1814 + ... + 1992.

It is an arithmetic number, because the mean of its divisors is an integer number (46980).

2³⁴⁰⁶³⁷ is an apocalyptic number.

It is an amenable number.

340637 is a deficient number, since it is larger than the sum of its proper divisors (35203).

340637 is a wasteful number, since it uses less digits than its factorization.

340637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 340637 is about 583.6411568764. The cubic root of 340637 is about 69.8388811382.

It can be divided in two parts, 3406 and 37, that added together give a palindrome (3443).

The spelling of 340637 in words is "three hundred forty thousand, six hundred thirty-seven".