61288216 has 16 divisors (see below), whose sum is σ = 125362440. Its totient is φ = 27858240.

The previous prime is 61288211. The next prime is 61288237.

61288216 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61288211) 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, 348141 + ... + 348316.

Almost surely, 2^61288216 is an apocalyptic number.

It is an amenable number.

61288216 is an abundant number, since it is smaller than the sum of its proper divisors (64074224).

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

61288216 is a wasteful number, since it uses less digits than its factorization.

61288216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696474 (or 696470 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 61288216 is about 7828.6790712099. The cubic root of 61288216 is about 394.2687233754.

It can be divided in two parts, 61288 and 216, that added together give a square (61504 = 248²).

The spelling of 61288216 in words is "sixty-one million, two hundred eighty-eight thousand, two hundred sixteen".