77461141 has 2 divisors, whose sum is σ = 77461142. Its totient is φ = 77461140.

The previous prime is 77461121. The next prime is 77461187. The reversal of 77461141 is 14116477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65141041 + 12320100 = 8071^2 + 3510^2 .

It is a cyclic number.

It is not a de Polignac number, because 77461141 - 2²¹ = 75363989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77461121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38730570 + 38730571.

It is an arithmetic number, because the mean of its divisors is an integer number (38730571).

Almost surely, 2^77461141 is an apocalyptic number.

It is an amenable number.

77461141 is a deficient number, since it is larger than the sum of its proper divisors (1).

77461141 is an equidigital number, since it uses as much as digits as its factorization.

77461141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 31.

The square root of 77461141 is about 8801.2011112120. The cubic root of 77461141 is about 426.2796788788.

The spelling of 77461141 in words is "seventy-seven million, four hundred sixty-one thousand, one hundred forty-one".