61687877 has 8 divisors (see below), whose sum is σ = 62244000. Its totient is φ = 61134480.

The previous prime is 61687819. The next prime is 61687907. The reversal of 61687877 is 77878616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61687877 - 2¹² = 61683781 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 (61687807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89978 + ... + 90660.

It is an arithmetic number, because the mean of its divisors is an integer number (7780500).

Almost surely, 2^61687877 is an apocalyptic number.

It is an amenable number.

61687877 is a deficient number, since it is larger than the sum of its proper divisors (556123).

61687877 is a wasteful number, since it uses less digits than its factorization.

61687877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363.

The product of its digits is 790272, while the sum is 50.

The square root of 61687877 is about 7854.1630362503. The cubic root of 61687877 is about 395.1238771855.

The spelling of 61687877 in words is "sixty-one million, six hundred eighty-seven thousand, eight hundred seventy-seven".