612641 has 4 divisors (see below), whose sum is σ = 614400. Its totient is φ = 610884.

The previous prime is 612637. The next prime is 612643. The reversal of 612641 is 146216.

It is a happy number.

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 612641 - 2² = 612637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (612643) 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, 161 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (153600).

2⁶¹²⁶⁴¹ is an apocalyptic number.

It is an amenable number.

612641 is a deficient number, since it is larger than the sum of its proper divisors (1759).

612641 is a wasteful number, since it uses less digits than its factorization.

612641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its digits is 288, while the sum is 20.

The square root of 612641 is about 782.7138685369. The cubic root of 612641 is about 84.9314788031.

Adding to 612641 its reverse (146216), we get a palindrome (758857).

The spelling of 612641 in words is "six hundred twelve thousand, six hundred forty-one".