61651016 has 24 divisors (see below), whose sum is σ = 134469270. Its totient is φ = 26421696.

The previous prime is 61650997. The next prime is 61651019. The reversal of 61651016 is 61015616.

It can be written as a sum of positive squares in only one way, i.e., 56942116 + 4708900 = 7546^2 + 2170^2 .

It is not an unprimeable number, because it can be changed into a prime (61651019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78245 + ... + 79028.

Almost surely, 2^61651016 is an apocalyptic number.

It is an amenable number.

61651016 is an abundant number, since it is smaller than the sum of its proper divisors (72818254).

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

61651016 is a wasteful number, since it uses less digits than its factorization.

61651016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157293 (or 157282 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 61651016 is about 7851.8160956558. The cubic root of 61651016 is about 395.0451606754.

The spelling of 61651016 in words is "sixty-one million, six hundred fifty-one thousand, sixteen".