61641416 has 24 divisors (see below), whose sum is σ = 116841270. Its totient is φ = 30487296.

The previous prime is 61641413. The next prime is 61641421. The reversal of 61641416 is 61414616.

It can be written as a sum of positive squares in only one way, i.e., 56100100 + 5541316 = 7490^2 + 2354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61641413) 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, 91256 + ... + 91928.

Almost surely, 2^61641416 is an apocalyptic number.

It is an amenable number.

61641416 is a deficient number, since it is larger than the sum of its proper divisors (55199854).

61641416 is a wasteful number, since it uses less digits than its factorization.

61641416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 782 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 61641416 is about 7851.2047483173. The cubic root of 61641416 is about 395.0246547662.

The spelling of 61641416 in words is "sixty-one million, six hundred forty-one thousand, four hundred sixteen".