61411691 has 16 divisors (see below), whose sum is σ = 68364000. Its totient is φ = 54700800.

The previous prime is 61411681. The next prime is 61411699. The reversal of 61411691 is 19611416.

61411691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61411691 - 2²² = 57217387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61411699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145661 + ... + 146081.

It is an arithmetic number, because the mean of its divisors is an integer number (4272750).

Almost surely, 2^61411691 is an apocalyptic number.

61411691 is a deficient number, since it is larger than the sum of its proper divisors (6952309).

61411691 is a wasteful number, since it uses less digits than its factorization.

61411691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its digits is 1296, while the sum is 29.

The square root of 61411691 is about 7836.5611718406. The cubic root of 61411691 is about 394.5333184179.

The spelling of 61411691 in words is "sixty-one million, four hundred eleven thousand, six hundred ninety-one".