61516712 has 16 divisors (see below), whose sum is σ = 115473300. Its totient is φ = 30723840.

The previous prime is 61516691. The next prime is 61516717. The reversal of 61516712 is 21761516.

It can be written as a sum of positive squares in 2 ways, for example, as 60621796 + 894916 = 7786^2 + 946^2 .

It is not an unprimeable number, because it can be changed into a prime (61516717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4262 + ... + 11882.

Almost surely, 2^61516712 is an apocalyptic number.

It is an amenable number.

61516712 is a deficient number, since it is larger than the sum of its proper divisors (53956588).

61516712 is a wasteful number, since it uses less digits than its factorization.

61516712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8636 (or 8632 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 61516712 is about 7843.2590165058. The cubic root of 61516712 is about 394.7580893383.

The spelling of 61516712 in words is "sixty-one million, five hundred sixteen thousand, seven hundred twelve".