637061 has 4 divisors (see below), whose sum is σ = 640800. Its totient is φ = 633324.

The previous prime is 637003. The next prime is 637067. The reversal of 637061 is 160736.

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 637061 - 2⁶ = 636997 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 (637067) 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, 1601 + ... + 1958.

It is an arithmetic number, because the mean of its divisors is an integer number (160200).

2⁶³⁷⁰⁶¹ is an apocalyptic number.

It is an amenable number.

637061 is a deficient number, since it is larger than the sum of its proper divisors (3739).

637061 is a wasteful number, since it uses less digits than its factorization.

637061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 637061 is about 798.1610113254. The cubic root of 637061 is about 86.0452709189.

Adding to 637061 its reverse (160736), we get a palindrome (797797).

The spelling of 637061 in words is "six hundred thirty-seven thousand, sixty-one".