61215116 has 6 divisors (see below), whose sum is σ = 107126460. Its totient is φ = 30607556.

The previous prime is 61215107. The next prime is 61215127. The reversal of 61215116 is 61151216.

It is a junction number, because it is equal to n+sod(n) for n = 61215091 and 61215100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7651886 + ... + 7651893.

It is an arithmetic number, because the mean of its divisors is an integer number (17854410).

Almost surely, 2^61215116 is an apocalyptic number.

It is an amenable number.

61215116 is a deficient number, since it is larger than the sum of its proper divisors (45911344).

61215116 is a wasteful number, since it uses less digits than its factorization.

61215116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15303783 (or 15303781 counting only the distinct ones).

The product of its digits is 360, while the sum is 23.

The square root of 61215116 is about 7824.0089468252. The cubic root of 61215116 is about 394.1119095990. Note that the first 3 decimals are identical.

The spelling of 61215116 in words is "sixty-one million, two hundred fifteen thousand, one hundred sixteen".