686042422 has 16 divisors (see below), whose sum is σ = 1135253952. Its totient is φ = 308911680.

The previous prime is 686042407. The next prime is 686042437. The reversal of 686042422 is 224240686.

It is an interprime number because it is at equal distance from previous prime (686042407) and next prime (686042437).

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, 320718 + ... + 322849.

It is an arithmetic number, because the mean of its divisors is an integer number (70953372).

Almost surely, 2^686042422 is an apocalyptic number.

686042422 is a deficient number, since it is larger than the sum of its proper divisors (449211530).

686042422 is a wasteful number, since it uses less digits than its factorization.

686042422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643623.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 686042422 is about 26192.4115346411. The cubic root of 686042422 is about 881.9629142696.

The spelling of 686042422 in words is "six hundred eighty-six million, forty-two thousand, four hundred twenty-two".