77296481 has 2 divisors, whose sum is σ = 77296482. Its totient is φ = 77296480.

The previous prime is 77296477. The next prime is 77296511. The reversal of 77296481 is 18469277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72522256 + 4774225 = 8516^2 + 2185^2 .

It is an emirp because it is prime and its reverse (18469277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77296481 - 2² = 77296477 is a prime.

It is a super-2 number, since 2×77296481² = 11949491949966722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77296421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38648240 + 38648241.

It is an arithmetic number, because the mean of its divisors is an integer number (38648241).

Almost surely, 2^77296481 is an apocalyptic number.

It is an amenable number.

77296481 is a deficient number, since it is larger than the sum of its proper divisors (1).

77296481 is an equidigital number, since it uses as much as digits as its factorization.

77296481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 77296481 is about 8791.8417296946. The cubic root of 77296481 is about 425.9774154675.

It can be divided in two parts, 77296 and 481, that added together give a palindrome (77777).

The spelling of 77296481 in words is "seventy-seven million, two hundred ninety-six thousand, four hundred eighty-one".