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BaseRepresentation
bin1111000000011101
310010022122
433000131
53431334
61152325
7344132
oct170035
9103278
1061469
1142201
122b6a5
1321c95
1418589
151332e
hexf01d

61469 has 2 divisors, whose sum is σ = 61470. Its totient is φ = 61468.

The previous prime is 61463. The next prime is 61471. The reversal of 61469 is 96416.

61469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60025 + 1444 = 245^2 + 38^2 .

It is a cyclic number.

It is not a de Polignac number, because 61469 - 212 = 57373 is a prime.

It is a super-2 number, since 2×614692 = 7556875922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 61471, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61463) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30734 + 30735.

It is an arithmetic number, because the mean of its divisors is an integer number (30735).

261469 is an apocalyptic number.

It is an amenable number.

61469 is a deficient number, since it is larger than the sum of its proper divisors (1).

61469 is an equidigital number, since it uses as much as digits as its factorization.

61469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 61469 is about 247.9294254420. The cubic root of 61469 is about 39.4656005591.

The spelling of 61469 in words is "sixty-one thousand, four hundred sixty-nine".