77116461 has 4 divisors (see below), whose sum is σ = 102821952. Its totient is φ = 51410972.

The previous prime is 77116451. The next prime is 77116463. The reversal of 77116461 is 16461177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77116461 - 2²¹ = 75019309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77116463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12852741 + ... + 12852746.

It is an arithmetic number, because the mean of its divisors is an integer number (25705488).

Almost surely, 2^77116461 is an apocalyptic number.

It is an amenable number.

77116461 is a deficient number, since it is larger than the sum of its proper divisors (25705491).

77116461 is a wasteful number, since it uses less digits than its factorization.

77116461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25705490.

The product of its digits is 7056, while the sum is 33.

The square root of 77116461 is about 8781.5978614373. The cubic root of 77116461 is about 425.6464643814.

It can be divided in two parts, 77116 and 461, that added together give a palindrome (77577).

The spelling of 77116461 in words is "seventy-seven million, one hundred sixteen thousand, four hundred sixty-one".