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61684 = 2272203
BaseRepresentation
bin1111000011110100
310010121121
433003310
53433214
61153324
7344560
oct170364
9103547
1061684
1142387
122b844
13220cc
14186a0
1513424
hexf0f4

61684 has 12 divisors (see below), whose sum is σ = 123424. Its totient is φ = 26424.

The previous prime is 61681. The next prime is 61687. The reversal of 61684 is 48616.

It is an interprime number because it is at equal distance from previous prime (61681) and next prime (61687).

61684 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074 + ... + 1129.

261684 is an apocalyptic number.

It is an amenable number.

61684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61712).

61684 is a wasteful number, since it uses less digits than its factorization.

61684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2212 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 61684 is about 248.3626380920. The cubic root of 61684 is about 39.5115599344.

The spelling of 61684 in words is "sixty-one thousand, six hundred eighty-four".

Divisors: 1 2 4 7 14 28 2203 4406 8812 15421 30842 61684