61128716 has 36 divisors (see below), whose sum is σ = 119853216. Its totient is φ = 27250080.

The previous prime is 61128709. The next prime is 61128737. The reversal of 61128716 is 61782116.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24461 + ... + 26843.

It is an arithmetic number, because the mean of its divisors is an integer number (3329256).

Almost surely, 2^61128716 is an apocalyptic number.

It is an amenable number.

61128716 is a deficient number, since it is larger than the sum of its proper divisors (58724500).

61128716 is a wasteful number, since it uses less digits than its factorization.

61128716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462 (or 2449 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 61128716 is about 7818.4855310987. The cubic root of 61128716 is about 393.9264036654.

The spelling of 61128716 in words is "sixty-one million, one hundred twenty-eight thousand, seven hundred sixteen".