61841680 has 20 divisors (see below), whose sum is σ = 143782092. Its totient is φ = 24736640.

The previous prime is 61841677. The next prime is 61841693. The reversal of 61841680 is 8614816.

It can be written as a sum of positive squares in 2 ways, for example, as 44302336 + 17539344 = 6656^2 + 4188^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386431 + ... + 386590.

Almost surely, 2^61841680 is an apocalyptic number.

It is an amenable number.

61841680 is an abundant number, since it is smaller than the sum of its proper divisors (81940412).

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

61841680 is a wasteful number, since it uses less digits than its factorization.

61841680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773034 (or 773028 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 61841680 is about 7863.9481178350. The cubic root of 61841680 is about 395.4519848819.

The spelling of 61841680 in words is "sixty-one million, eight hundred forty-one thousand, six hundred eighty".