606686388 has 48 divisors (see below), whose sum is σ = 1764908544. Its totient is φ = 157580640.

The previous prime is 606686371. The next prime is 606686393. The reversal of 606686388 is 883686606.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 606686388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327370 + ... + 329217.

It is an arithmetic number, because the mean of its divisors is an integer number (36768928).

Almost surely, 2^606686388 is an apocalyptic number.

It is an amenable number.

606686388 is an abundant number, since it is smaller than the sum of its proper divisors (1158222156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

606686388 is a wasteful number, since it uses less digits than its factorization.

606686388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656612 (or 656610 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The square root of 606686388 is about 24631.0046080139. The cubic root of 606686388 is about 846.5541641356.

The spelling of 606686388 in words is "six hundred six million, six hundred eighty-six thousand, three hundred eighty-eight".