920414681 has 2 divisors, whose sum is σ = 920414682. Its totient is φ = 920414680.

The previous prime is 920414647. The next prime is 920414689. The reversal of 920414681 is 186414029.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 887742025 + 32672656 = 29795^2 + 5716^2 .

It is a cyclic number.

It is not a de Polignac number, because 920414681 - 2¹⁸ = 920152537 is a prime.

It is a super-4 number, since 4×920414681⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (920414689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460207340 + 460207341.

It is an arithmetic number, because the mean of its divisors is an integer number (460207341).

Almost surely, 2^920414681 is an apocalyptic number.

It is an amenable number.

920414681 is a deficient number, since it is larger than the sum of its proper divisors (1).

920414681 is an equidigital number, since it uses as much as digits as its factorization.

920414681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 920414681 is about 30338.3368199379. The cubic root of 920414681 is about 972.7349325687.

The spelling of 920414681 in words is "nine hundred twenty million, four hundred fourteen thousand, six hundred eighty-one".