1000800061 has 2 divisors, whose sum is σ = 1000800062. Its totient is φ = 1000800060.

The previous prime is 1000800041. The next prime is 1000800077. The reversal of 1000800061 is 1600080001.

It is an a-pointer prime, because the next prime (1000800077) can be obtained adding 1000800061 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793267225 + 207532836 = 28165^2 + 14406^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000800061 - 2¹⁷ = 1000668989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000800041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500400030 + 500400031.

It is an arithmetic number, because the mean of its divisors is an integer number (500400031).

Almost surely, 2^1000800061 is an apocalyptic number.

It is an amenable number.

1000800061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000800061 is an equidigital number, since it uses as much as digits as its factorization.

1000800061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1000800061 is about 31635.4241476229. The cubic root of 1000800061 is about 1000.2666159096.

Adding to 1000800061 its reverse (1600080001), we get a palindrome (2600880062).

The spelling of 1000800061 in words is "one billion, eight hundred thousand, sixty-one".