61845894 has 24 divisors (see below), whose sum is σ = 146181672. Its totient is φ = 18741120.

The previous prime is 61845863. The next prime is 61845913. The reversal of 61845894 is 49854816.

61845894 is a `hidden beast` number, since 61 + 8 + 4 + 589 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155979 + ... + 156374.

It is an arithmetic number, because the mean of its divisors is an integer number (6090903).

Almost surely, 2^61845894 is an apocalyptic number.

61845894 is an abundant number, since it is smaller than the sum of its proper divisors (84335778).

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

61845894 is a wasteful number, since it uses less digits than its factorization.

61845894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312372 (or 312369 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 61845894 is about 7864.2160448452. The cubic root of 61845894 is about 395.4609669407.

The spelling of 61845894 in words is "sixty-one million, eight hundred forty-five thousand, eight hundred ninety-four".