61984650 has 192 divisors, whose sum is σ = 199987200. Its totient is φ = 12337920.

The previous prime is 61984639. The next prime is 61984651. The reversal of 61984650 is 5648916.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 61984599 and 61984608.

It is not an unprimeable number, because it can be changed into a prime (61984651) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 259231 + ... + 259469.

It is an arithmetic number, because the mean of its divisors is an integer number (1041600).

Almost surely, 2^61984650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61984650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99993600).

61984650 is an abundant number, since it is smaller than the sum of its proper divisors (138002550).

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

61984650 is a wasteful number, since it uses less digits than its factorization.

61984650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 61984650 is about 7873.0330876988. The cubic root of 61984650 is about 395.7564950268.

The spelling of 61984650 in words is "sixty-one million, nine hundred eighty-four thousand, six hundred fifty".