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137661 = 345887
BaseRepresentation
bin100001100110111101
320222211120
4201212331
513401121
62541153
71112226
oct414675
9228746
10137661
1194477
12677b9
134a874
143824d
152abc6
hex219bd

137661 has 4 divisors (see below), whose sum is σ = 183552. Its totient is φ = 91772.

The previous prime is 137659. The next prime is 137699. The reversal of 137661 is 166731.

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 137661 - 21 = 137659 is a prime.

It is a D-number.

It is a Curzon number.

It is a plaindrome in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 137661.

It is not an unprimeable number, because it can be changed into a prime (132661) 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, 22941 + ... + 22946.

It is an arithmetic number, because the mean of its divisors is an integer number (45888).

2137661 is an apocalyptic number.

It is an amenable number.

137661 is a deficient number, since it is larger than the sum of its proper divisors (45891).

137661 is an equidigital number, since it uses as much as digits as its factorization.

137661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45890.

The product of its digits is 756, while the sum is 24.

The square root of 137661 is about 371.0269531988. The cubic root of 137661 is about 51.6341430181.

The spelling of 137661 in words is "one hundred thirty-seven thousand, six hundred sixty-one".

Divisors: 1 3 45887 137661