77130361 has 18 divisors (see below), whose sum is σ = 98628810. Its totient is φ = 60096960.

The previous prime is 77130359. The next prime is 77130379. The reversal of 77130361 is 16303177.

It can be written as a sum of positive squares in only one way, i.e., 55785961 + 21344400 = 7469^2 + 4620^2 .

It is not a de Polignac number, because 77130361 - 2¹ = 77130359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77130331) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 576 + ... + 12433.

Almost surely, 2^77130361 is an apocalyptic number.

It is an amenable number.

77130361 is a deficient number, since it is larger than the sum of its proper divisors (21498449).

77130361 is a wasteful number, since it uses less digits than its factorization.

77130361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13045 (or 13027 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 77130361 is about 8782.3892535004. The cubic root of 77130361 is about 425.6720366580.

The spelling of 77130361 in words is "seventy-seven million, one hundred thirty thousand, three hundred sixty-one".