340694638 has 16 divisors (see below), whose sum is σ = 522354960. Its totient is φ = 166608000.

The previous prime is 340694623. The next prime is 340694647. The reversal of 340694638 is 836496043.

It is a junction number, because it is equal to n+sod(n) for n = 340694594 and 340694603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14038 + ... + 29638.

It is an arithmetic number, because the mean of its divisors is an integer number (32647185).

Almost surely, 2^340694638 is an apocalyptic number.

340694638 is a deficient number, since it is larger than the sum of its proper divisors (181660322).

340694638 is a wasteful number, since it uses less digits than its factorization.

340694638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15843.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 340694638 is about 18457.9153210757. The cubic root of 340694638 is about 698.4281998068.

The spelling of 340694638 in words is "three hundred forty million, six hundred ninety-four thousand, six hundred thirty-eight".