61219080 has 192 divisors, whose sum is σ = 218050560. Its totient is φ = 14805504.

The previous prime is 61219073. The next prime is 61219097. The reversal of 61219080 is 8091216.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 481977 + ... + 482103.

It is an arithmetic number, because the mean of its divisors is an integer number (1135680).

Almost surely, 2^61219080 is an apocalyptic number.

61219080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61219080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109025280).

61219080 is an abundant number, since it is smaller than the sum of its proper divisors (156831480).

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

61219080 is a wasteful number, since it uses less digits than its factorization.

61219080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 61219080 is about 7824.2622655430. The cubic root of 61219080 is about 394.1204163535.

The spelling of 61219080 in words is "sixty-one million, two hundred nineteen thousand, eighty".