61863800 has 48 divisors (see below), whose sum is σ = 144473640. Its totient is φ = 24635520.

The previous prime is 61863733. The next prime is 61863839. The reversal of 61863800 is 836816.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 56054 + ... + 57146.

Almost surely, 2^61863800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61863800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72236820).

61863800 is an abundant number, since it is smaller than the sum of its proper divisors (82609840).

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

61863800 is a wasteful number, since it uses less digits than its factorization.

61863800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 61863800 is about 7865.3544103238. The cubic root of 61863800 is about 395.4991286808.

The spelling of 61863800 in words is "sixty-one million, eight hundred sixty-three thousand, eight hundred".