609011901 has 6 divisors (see below), whose sum is σ = 879683870. Its totient is φ = 406007928.

The previous prime is 609011849. The next prime is 609011903. The reversal of 609011901 is 109110906.

It can be written as a sum of positive squares in only one way, i.e., 548964900 + 60047001 = 23430^2 + 7749^2 .

It is not a de Polignac number, because 609011901 - 2⁷ = 609011773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609011903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33833986 + ... + 33834003.

Almost surely, 2^609011901 is an apocalyptic number.

It is an amenable number.

609011901 is a deficient number, since it is larger than the sum of its proper divisors (270671969).

609011901 is a wasteful number, since it uses less digits than its factorization.

609011901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67667995 (or 67667992 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 609011901 is about 24678.1664837564. The cubic root of 609011901 is about 847.6344381713.

The spelling of 609011901 in words is "six hundred nine million, eleven thousand, nine hundred one".