20007061 has 2 divisors, whose sum is σ = 20007062. Its totient is φ = 20007060.

The previous prime is 20007049. The next prime is 20007107. The reversal of 20007061 is 16070002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13727025 + 6280036 = 3705^2 + 2506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20007061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20007041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003530 + 10003531.

It is an arithmetic number, because the mean of its divisors is an integer number (10003531).

Almost surely, 2^20007061 is an apocalyptic number.

It is an amenable number.

20007061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20007061 is an equidigital number, since it uses as much as digits as its factorization.

20007061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20007061 is about 4472.9253291330. The cubic root of 20007061 is about 271.4737020722.

Adding to 20007061 its reverse (16070002), we get a palindrome (36077063).

It can be divided in two parts, 200070 and 61, that multiplied together give a triangular number (12204270 = T₄₉₄₀).

The spelling of 20007061 in words is "twenty million, seven thousand, sixty-one".