615983441 has 2 divisors, whose sum is σ = 615983442. Its totient is φ = 615983440.

The previous prime is 615983419. The next prime is 615983521. The reversal of 615983441 is 144389516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492662416 + 123321025 = 22196^2 + 11105^2 .

It is a cyclic number.

It is not a de Polignac number, because 615983441 - 2²² = 611789137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (615982441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307991720 + 307991721.

It is an arithmetic number, because the mean of its divisors is an integer number (307991721).

Almost surely, 2^615983441 is an apocalyptic number.

It is an amenable number.

615983441 is a deficient number, since it is larger than the sum of its proper divisors (1).

615983441 is an equidigital number, since it uses as much as digits as its factorization.

615983441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 615983441 is about 24819.0136991783. The cubic root of 615983441 is about 850.8565487881.

The spelling of 615983441 in words is "six hundred fifteen million, nine hundred eighty-three thousand, four hundred forty-one".