20761469 has 2 divisors, whose sum is σ = 20761470. Its totient is φ = 20761468.

The previous prime is 20761463. The next prime is 20761487. The reversal of 20761469 is 96416702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14822500 + 5938969 = 3850^2 + 2437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20761469 is a prime.

It is a super-2 number, since 2×20761469² = 862077190075922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20761463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10380734 + 10380735.

It is an arithmetic number, because the mean of its divisors is an integer number (10380735).

Almost surely, 2^20761469 is an apocalyptic number.

It is an amenable number.

20761469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20761469 is an equidigital number, since it uses as much as digits as its factorization.

20761469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20761469 is about 4556.4755019642. The cubic root of 20761469 is about 274.8438518499.

The spelling of 20761469 in words is "twenty million, seven hundred sixty-one thousand, four hundred sixty-nine".