61894811 has 8 divisors (see below), whose sum is σ = 67741104. Its totient is φ = 56085120.

The previous prime is 61894741. The next prime is 61894823. The reversal of 61894811 is 11849816.

61894811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61894811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61894891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5546 + ... + 12431.

It is an arithmetic number, because the mean of its divisors is an integer number (8467638).

Almost surely, 2^61894811 is an apocalyptic number.

61894811 is a deficient number, since it is larger than the sum of its proper divisors (5846293).

61894811 is a wasteful number, since it uses less digits than its factorization.

61894811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18301.

The product of its digits is 13824, while the sum is 38.

The square root of 61894811 is about 7867.3255303184. The cubic root of 61894811 is about 395.5652027267.

The spelling of 61894811 in words is "sixty-one million, eight hundred ninety-four thousand, eight hundred eleven".