609007801 has 4 divisors (see below), whose sum is σ = 630008100. Its totient is φ = 588007504.

The previous prime is 609007783. The next prime is 609007837. The reversal of 609007801 is 108700906.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108700906 = 2 ⋅54350453.

It can be written as a sum of positive squares in 2 ways, for example, as 163840000 + 445167801 = 12800^2 + 21099^2 .

It is a cyclic number.

It is not a de Polignac number, because 609007801 - 2⁷ = 609007673 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609007001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10500106 + ... + 10500163.

It is an arithmetic number, because the mean of its divisors is an integer number (157502025).

Almost surely, 2^609007801 is an apocalyptic number.

It is an amenable number.

609007801 is a deficient number, since it is larger than the sum of its proper divisors (21000299).

609007801 is a wasteful number, since it uses less digits than its factorization.

609007801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21000298.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 609007801 is about 24678.0834142362. The cubic root of 609007801 is about 847.6325360142.

The spelling of 609007801 in words is "six hundred nine million, seven thousand, eight hundred one".