61771060 has 24 divisors (see below), whose sum is σ = 139698216. Its totient is φ = 22807680.

The previous prime is 61771049. The next prime is 61771097. The reversal of 61771060 is 6017716.

It can be written as a sum of positive squares in 4 ways, for example, as 3370896 + 58400164 = 1836^2 + 7642^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118531 + ... + 119050.

It is an arithmetic number, because the mean of its divisors is an integer number (5820759).

Almost surely, 2^61771060 is an apocalyptic number.

It is an amenable number.

61771060 is an abundant number, since it is smaller than the sum of its proper divisors (77927156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61771060 is a wasteful number, since it uses less digits than its factorization.

61771060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237603 (or 237601 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 61771060 is about 7859.4567242272. The cubic root of 61771060 is about 395.3013989759.

Adding to 61771060 its reverse (6017716), we get a palindrome (67788776).

The spelling of 61771060 in words is "sixty-one million, seven hundred seventy-one thousand, sixty".