61877 has 4 divisors (see below), whose sum is σ = 63360. Its totient is φ = 60396.

The previous prime is 61871. The next prime is 61879. The reversal of 61877 is 77816.

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 61877 - 2⁴ = 61861 is a prime.

It is a Duffinian number.

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 61877.

It is not an unprimeable number, because it can be changed into a prime (61871) 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, 677 + ... + 762.

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

2⁶¹⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

61877 is a deficient number, since it is larger than the sum of its proper divisors (1483).

61877 is a wasteful number, since it uses less digits than its factorization.

61877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its digits is 2352, while the sum is 29.

The square root of 61877 is about 248.7508793954. The cubic root of 61877 is about 39.5527256155.

It can be divided in two parts, 618 and 77, that multiplied together give a triangular number (47586 = T₃₀₈).

The spelling of 61877 in words is "sixty-one thousand, eight hundred seventy-seven".