2061577 has 6 divisors (see below), whose sum is σ = 2398218. Its totient is φ = 1767024.

The previous prime is 2061551. The next prime is 2061583. The reversal of 2061577 is 7751602.

It can be written as a sum of positive squares in only one way, i.e., 1207801 + 853776 = 1099^2 + 924^2 .

It is not a de Polignac number, because 2061577 - 2¹⁵ = 2028809 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 (2061077) 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, 20988 + ... + 21085.

It is an arithmetic number, because the mean of its divisors is an integer number (399703).

2^2061577 is an apocalyptic number.

It is an amenable number.

2061577 is a deficient number, since it is larger than the sum of its proper divisors (336641).

2061577 is an equidigital number, since it uses as much as digits as its factorization.

2061577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42087 (or 42080 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 2061577 is about 1435.8192783216. The cubic root of 2061577 is about 127.2720931787.

The spelling of 2061577 in words is "two million, sixty-one thousand, five hundred seventy-seven".