606436645 has 4 divisors (see below), whose sum is σ = 727723980. Its totient is φ = 485149312.

The previous prime is 606436583. The next prime is 606436657. The reversal of 606436645 is 546634606.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124590244 + 481846401 = 11162^2 + 21951^2 .

It is a cyclic number.

It is not a de Polignac number, because 606436645 - 2¹⁷ = 606305573 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 606436598 and 606436607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60643660 + ... + 60643669.

It is an arithmetic number, because the mean of its divisors is an integer number (181930995).

Almost surely, 2^606436645 is an apocalyptic number.

It is an amenable number.

606436645 is a deficient number, since it is larger than the sum of its proper divisors (121287335).

606436645 is a wasteful number, since it uses less digits than its factorization.

606436645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121287334.

The product of its (nonzero) digits is 311040, while the sum is 40.

The square root of 606436645 is about 24625.9343985157. The cubic root of 606436645 is about 846.4379865970.

The spelling of 606436645 in words is "six hundred six million, four hundred thirty-six thousand, six hundred forty-five".