607921 has 2 divisors, whose sum is σ = 607922. Its totient is φ = 607920.

The previous prime is 607909. The next prime is 607931. The reversal of 607921 is 129706.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505521 + 102400 = 711^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 607921 - 2⁵ = 607889 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 0 + 9⁵ + 7⁵ + 2¹⁹ + 1 .

607921 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (607931) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303960 + 303961.

It is an arithmetic number, because the mean of its divisors is an integer number (303961).

2⁶⁰⁷⁹²¹ is an apocalyptic number.

It is an amenable number.

607921 is a deficient number, since it is larger than the sum of its proper divisors (1).

607921 is an equidigital number, since it uses as much as digits as its factorization.

607921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 607921 is about 779.6928882579. The cubic root of 607921 is about 84.7128023369.

The spelling of 607921 in words is "six hundred seven thousand, nine hundred twenty-one".