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60861 = 320287
BaseRepresentation
bin1110110110111101
310002111010
432312331
53421421
61145433
7342303
oct166675
9102433
1060861
11417a9
122b279
1321918
1418273
1513076
hexedbd

60861 has 4 divisors (see below), whose sum is σ = 81152. Its totient is φ = 40572.

The previous prime is 60859. The next prime is 60869. The reversal of 60861 is 16806.

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 not a de Polignac number, because 60861 - 21 = 60859 is a prime.

It is a super-2 number, since 2×608612 = 7408122642, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

60861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60869) 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, 10141 + ... + 10146.

It is an arithmetic number, because the mean of its divisors is an integer number (20288).

260861 is an apocalyptic number.

It is an amenable number.

60861 is a deficient number, since it is larger than the sum of its proper divisors (20291).

60861 is a wasteful number, since it uses less digits than its factorization.

60861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20290.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 60861 is about 246.7002229427. The cubic root of 60861 is about 39.3350489213.

The spelling of 60861 in words is "sixty thousand, eight hundred sixty-one".

Divisors: 1 3 20287 60861