615941 has 2 divisors, whose sum is σ = 615942. Its totient is φ = 615940.

The previous prime is 615919. The next prime is 615949. The reversal of 615941 is 149516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519841 + 96100 = 721^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 615941 - 2¹⁰ = 614917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 615941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307970 + 307971.

It is an arithmetic number, because the mean of its divisors is an integer number (307971).

2⁶¹⁵⁹⁴¹ is an apocalyptic number.

It is an amenable number.

615941 is a deficient number, since it is larger than the sum of its proper divisors (1).

615941 is an equidigital number, since it uses as much as digits as its factorization.

615941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 615941 is about 784.8190874335. The cubic root of 615941 is about 85.0837007120.

The spelling of 615941 in words is "six hundred fifteen thousand, nine hundred forty-one".