61805394 has 24 divisors (see below), whose sum is σ = 153042240. Its totient is φ = 17658648.

The previous prime is 61805389. The next prime is 61805399. The reversal of 61805394 is 49350816.

61805394 is a `hidden beast` number, since 618 + 0 + 5 + 39 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (61805389) and next prime (61805399).

It is not an unprimeable number, because it can be changed into a prime (61805399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245134 + ... + 245385.

It is an arithmetic number, because the mean of its divisors is an integer number (6376760).

Almost surely, 2^61805394 is an apocalyptic number.

61805394 is an abundant number, since it is smaller than the sum of its proper divisors (91236846).

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

61805394 is a wasteful number, since it uses less digits than its factorization.

61805394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490534 (or 490531 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 61805394 is about 7861.6406684610. The cubic root of 61805394 is about 395.3746250918.

The spelling of 61805394 in words is "sixty-one million, eight hundred five thousand, three hundred ninety-four".