61854871 has 8 divisors (see below), whose sum is σ = 67526480. Its totient is φ = 56313792.

The previous prime is 61854853. The next prime is 61854893. The reversal of 61854871 is 17845816.

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 61854871 - 2⁵ = 61854839 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 (61854811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31641 + ... + 33538.

It is an arithmetic number, because the mean of its divisors is an integer number (8440810).

Almost surely, 2^61854871 is an apocalyptic number.

61854871 is a deficient number, since it is larger than the sum of its proper divisors (5671609).

61854871 is a wasteful number, since it uses less digits than its factorization.

61854871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65265.

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

The square root of 61854871 is about 7864.7867739691. The cubic root of 61854871 is about 395.4800998808.

The spelling of 61854871 in words is "sixty-one million, eight hundred fifty-four thousand, eight hundred seventy-one".