606401658 has 48 divisors (see below), whose sum is σ = 1395955080. Its totient is φ = 189883008.

The previous prime is 606401639. The next prime is 606401659. The reversal of 606401658 is 856104606.

606401658 is a `hidden beast` number, since 6 + 0 + 640 + 1 + 6 + 5 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 584527329 + 21874329 = 24177^2 + 4677^2 .

It is not an unprimeable number, because it can be changed into a prime (606401659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3616 + ... + 35012.

Almost surely, 2^606401658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 606401658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697977540).

606401658 is an abundant number, since it is smaller than the sum of its proper divisors (789553422).

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

606401658 is a wasteful number, since it uses less digits than its factorization.

606401658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31471 (or 31468 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 606401658 is about 24625.2240192856. The cubic root of 606401658 is about 846.4217085045.

The spelling of 606401658 in words is "six hundred six million, four hundred one thousand, six hundred fifty-eight".