61858830 has 48 divisors (see below), whose sum is σ = 163194192. Its totient is φ = 14995200.

The previous prime is 61858789. The next prime is 61858831. The reversal of 61858830 is 3885816.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61858831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4891 + ... + 12150.

It is an arithmetic number, because the mean of its divisors is an integer number (3399879).

Almost surely, 2^61858830 is an apocalyptic number.

61858830 is an abundant number, since it is smaller than the sum of its proper divisors (101335362).

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

61858830 is a wasteful number, since it uses less digits than its factorization.

61858830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17073 (or 17062 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 61858830 is about 7865.0384614444. The cubic root of 61858830 is about 395.4885372239.

The spelling of 61858830 in words is "sixty-one million, eight hundred fifty-eight thousand, eight hundred thirty".