905880641 has 2 divisors, whose sum is σ = 905880642. Its totient is φ = 905880640.

The previous prime is 905880617. The next prime is 905880697. The reversal of 905880641 is 146088509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900240016 + 5640625 = 30004^2 + 2375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-905880641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (905882641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452940320 + 452940321.

It is an arithmetic number, because the mean of its divisors is an integer number (452940321).

Almost surely, 2^905880641 is an apocalyptic number.

It is an amenable number.

905880641 is a deficient number, since it is larger than the sum of its proper divisors (1).

905880641 is an equidigital number, since it uses as much as digits as its factorization.

905880641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 905880641 is about 30097.8511026950. The cubic root of 905880641 is about 967.5876716596.

The spelling of 905880641 in words is "nine hundred five million, eight hundred eighty thousand, six hundred forty-one".