686786342 has 16 divisors (see below), whose sum is σ = 1138060800. Its totient is φ = 308223240.

The previous prime is 686786339. The next prime is 686786363. The reversal of 686786342 is 243687686.

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, 195842 + ... + 199317.

It is an arithmetic number, because the mean of its divisors is an integer number (71128800).

Almost surely, 2^686786342 is an apocalyptic number.

686786342 is a deficient number, since it is larger than the sum of its proper divisors (451274458).

686786342 is a wasteful number, since it uses less digits than its factorization.

686786342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395251.

The product of its digits is 2322432, while the sum is 50.

The square root of 686786342 is about 26206.6087466501. The cubic root of 686786342 is about 882.2815888486.

The spelling of 686786342 in words is "six hundred eighty-six million, seven hundred eighty-six thousand, three hundred forty-two".