61182861 has 16 divisors (see below), whose sum is σ = 83599104. Its totient is φ = 39783744.

The previous prime is 61182853. The next prime is 61182923. The reversal of 61182861 is 16828116.

It is not a de Polignac number, because 61182861 - 2³ = 61182853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61182061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55431 + ... + 56523.

It is an arithmetic number, because the mean of its divisors is an integer number (5224944).

Almost surely, 2^61182861 is an apocalyptic number.

It is an amenable number.

61182861 is a deficient number, since it is larger than the sum of its proper divisors (22416243).

61182861 is a wasteful number, since it uses less digits than its factorization.

61182861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540.

The product of its digits is 4608, while the sum is 33.

The square root of 61182861 is about 7821.9473917945. The cubic root of 61182861 is about 394.0426766282.

The spelling of 61182861 in words is "sixty-one million, one hundred eighty-two thousand, eight hundred sixty-one".