61853658 has 16 divisors (see below), whose sum is σ = 123785760. Its totient is φ = 20604816.

The previous prime is 61853657. The next prime is 61853669. The reversal of 61853658 is 85635816.

It is not an unprimeable number, because it can be changed into a prime (61853657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14016 + ... + 17892.

It is an arithmetic number, because the mean of its divisors is an integer number (7736610).

Almost surely, 2^61853658 is an apocalyptic number.

61853658 is an abundant number, since it is smaller than the sum of its proper divisors (61932102).

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

61853658 is a wasteful number, since it uses less digits than its factorization.

61853658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541.

The product of its digits is 172800, while the sum is 42.

The square root of 61853658 is about 7864.7096577051. The cubic root of 61853658 is about 395.4775146869.

The spelling of 61853658 in words is "sixty-one million, eight hundred fifty-three thousand, six hundred fifty-eight".