61841857 has 8 divisors (see below), whose sum is σ = 77101632. Its totient is φ = 48188400.

The previous prime is 61841803. The next prime is 61841867. The reversal of 61841857 is 75814816.

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 61841857 - 2⁷ = 61841729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61841867) 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, 401494 + ... + 401647.

It is an arithmetic number, because the mean of its divisors is an integer number (9637704).

Almost surely, 2^61841857 is an apocalyptic number.

It is an amenable number.

61841857 is a deficient number, since it is larger than the sum of its proper divisors (15259775).

61841857 is a wasteful number, since it uses less digits than its factorization.

61841857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803159.

The product of its digits is 53760, while the sum is 40.

The square root of 61841857 is about 7863.9593717160. The cubic root of 61841857 is about 395.4523621622.

The spelling of 61841857 in words is "sixty-one million, eight hundred forty-one thousand, eight hundred fifty-seven".