741661 has 2 divisors, whose sum is σ = 741662. Its totient is φ = 741660.

The previous prime is 741641. The next prime is 741667. The reversal of 741661 is 166147.

It is a happy number.

741661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 93636 = 805^2 + 306^2 .

It is an emirp because it is prime and its reverse (166147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 741661 - 2¹⁵ = 708893 is a prime.

It is a super-2 number, since 2×741661² = 1100122077842, which contains 22 as substring.

741661 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (741667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370830 + 370831.

It is an arithmetic number, because the mean of its divisors is an integer number (370831).

2⁷⁴¹⁶⁶¹ is an apocalyptic number.

It is an amenable number.

741661 is a deficient number, since it is larger than the sum of its proper divisors (1).

741661 is an equidigital number, since it uses as much as digits as its factorization.

741661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 741661 is about 861.1974221977. The cubic root of 741661 is about 90.5180412330.

The spelling of 741661 in words is "seven hundred forty-one thousand, six hundred sixty-one".