61277871 has 8 divisors (see below), whose sum is σ = 82115200. Its totient is φ = 40646232.

The previous prime is 61277863. The next prime is 61277873. The reversal of 61277871 is 17877216.

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

It is not a de Polignac number, because 61277871 - 2³ = 61277863 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 (61277873) 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, 50725 + ... + 51918.

It is an arithmetic number, because the mean of its divisors is an integer number (10264400).

Almost surely, 2^61277871 is an apocalyptic number.

61277871 is a deficient number, since it is larger than the sum of its proper divisors (20837329).

61277871 is a wasteful number, since it uses less digits than its factorization.

61277871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102845.

The product of its digits is 32928, while the sum is 39.

The square root of 61277871 is about 7828.0183316086. The cubic root of 61277871 is about 394.2465389071.

The spelling of 61277871 in words is "sixty-one million, two hundred seventy-seven thousand, eight hundred seventy-one".