61986927 has 4 divisors (see below), whose sum is σ = 82649240. Its totient is φ = 41324616.

The previous prime is 61986917. The next prime is 61986931. The reversal of 61986927 is 72968916.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61986927 - 2⁸ = 61986671 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 (61986917) 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, 10331152 + ... + 10331157.

It is an arithmetic number, because the mean of its divisors is an integer number (20662310).

Almost surely, 2^61986927 is an apocalyptic number.

61986927 is a deficient number, since it is larger than the sum of its proper divisors (20662313).

61986927 is a wasteful number, since it uses less digits than its factorization.

61986927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20662312.

The product of its digits is 326592, while the sum is 48.

The square root of 61986927 is about 7873.1776939175. The cubic root of 61986927 is about 395.7613409927.

The spelling of 61986927 in words is "sixty-one million, nine hundred eighty-six thousand, nine hundred twenty-seven".