61140216 has 32 divisors (see below), whose sum is σ = 153048960. Its totient is φ = 20353632.

The previous prime is 61140199. The next prime is 61140221. The reversal of 61140216 is 61204116.

It is a junction number, because it is equal to n+sod(n) for n = 61140192 and 61140201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28311 + ... + 30393.

It is an arithmetic number, because the mean of its divisors is an integer number (4782780).

Almost surely, 2^61140216 is an apocalyptic number.

It is an amenable number.

61140216 is an abundant number, since it is smaller than the sum of its proper divisors (91908744).

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

61140216 is a wasteful number, since it uses less digits than its factorization.

61140216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315 (or 3311 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 61140216 is about 7819.2209330598. The cubic root of 61140216 is about 393.9511049290.

The spelling of 61140216 in words is "sixty-one million, one hundred forty thousand, two hundred sixteen".