611020201 has 4 divisors (see below), whose sum is σ = 666567504. Its totient is φ = 555472900.

The previous prime is 611020181. The next prime is 611020211. The reversal of 611020201 is 102020116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611020201 - 2²³ = 602631593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611020211) 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, 27773635 + ... + 27773656.

It is an arithmetic number, because the mean of its divisors is an integer number (166641876).

Almost surely, 2^611020201 is an apocalyptic number.

It is an amenable number.

611020201 is a deficient number, since it is larger than the sum of its proper divisors (55547303).

611020201 is a wasteful number, since it uses less digits than its factorization.

611020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55547302.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 611020201 is about 24718.8228077310. The cubic root of 611020201 is about 848.5651460203.

Adding to 611020201 its reverse (102020116), we get a palindrome (713040317).

The spelling of 611020201 in words is "six hundred eleven million, twenty thousand, two hundred one".