739621 has 2 divisors, whose sum is σ = 739622. Its totient is φ = 739620.

The previous prime is 739603. The next prime is 739631. The reversal of 739621 is 126937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656100 + 83521 = 810^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 739621 - 2⁷ = 739493 is a prime.

739621 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 739621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (739601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369810 + 369811.

It is an arithmetic number, because the mean of its divisors is an integer number (369811).

2⁷³⁹⁶²¹ is an apocalyptic number.

It is an amenable number.

739621 is a deficient number, since it is larger than the sum of its proper divisors (1).

739621 is an equidigital number, since it uses as much as digits as its factorization.

739621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 739621 is about 860.0122092157. The cubic root of 739621 is about 90.4349725678.

The spelling of 739621 in words is "seven hundred thirty-nine thousand, six hundred twenty-one".