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61349 = 311979
BaseRepresentation
bin1110111110100101
310010011012
432332211
53430344
61152005
7343601
oct167645
9103135
1061349
1142102
122b605
1321c02
1418501
151329e
hexefa5

61349 has 4 divisors (see below), whose sum is σ = 63360. Its totient is φ = 59340.

The previous prime is 61343. The next prime is 61357. The reversal of 61349 is 94316.

61349 = 1422 + 1432 + 1442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61349 - 24 = 61333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959 + ... + 1020.

It is an arithmetic number, because the mean of its divisors is an integer number (15840).

261349 is an apocalyptic number.

It is an amenable number.

61349 is a deficient number, since it is larger than the sum of its proper divisors (2011).

61349 is a wasteful number, since it uses less digits than its factorization.

61349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010.

The product of its digits is 648, while the sum is 23.

The square root of 61349 is about 247.6873028639. The cubic root of 61349 is about 39.4399022005.

The spelling of 61349 in words is "sixty-one thousand, three hundred forty-nine".

Divisors: 1 31 1979 61349