61788716 has 12 divisors (see below), whose sum is σ = 117960360. Its totient is φ = 28085760.

The previous prime is 61788679. The next prime is 61788737.

61788716 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1404289 = 61788716 / (6 + 1 + 7 + 8 + 8 + 7 + 1 + 6).

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, 702101 + ... + 702188.

It is an arithmetic number, because the mean of its divisors is an integer number (9830030).

Almost surely, 2^61788716 is an apocalyptic number.

It is an amenable number.

61788716 is a deficient number, since it is larger than the sum of its proper divisors (56171644).

61788716 is a wasteful number, since it uses less digits than its factorization.

61788716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404304 (or 1404302 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 61788716 is about 7860.5798768284. The cubic root of 61788716 is about 395.3390583406.

The spelling of 61788716 in words is "sixty-one million, seven hundred eighty-eight thousand, seven hundred sixteen".