61516065 has 16 divisors (see below), whose sum is σ = 105997248. Its totient is φ = 30284736.

The previous prime is 61516061. The next prime is 61516067. The reversal of 61516065 is 56061516.

It is not a de Polignac number, because 61516065 - 2² = 61516061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61516061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157539 + ... + 157928.

It is an arithmetic number, because the mean of its divisors is an integer number (6624828).

Almost surely, 2^61516065 is an apocalyptic number.

61516065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61516065 is a deficient number, since it is larger than the sum of its proper divisors (44481183).

61516065 is a wasteful number, since it uses less digits than its factorization.

61516065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315488.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 61516065 is about 7843.2177707877. The cubic root of 61516065 is about 394.7567053817.

The spelling of 61516065 in words is "sixty-one million, five hundred sixteen thousand, sixty-five".