77468957 has 2 divisors, whose sum is σ = 77468958. Its totient is φ = 77468956.

The previous prime is 77468869. The next prime is 77468977. The reversal of 77468957 is 75986477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 16924996 = 7781^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 77468957 - 2²² = 73274653 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 77468899 and 77468908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77468977) 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 as a sum of consecutive naturals, namely, 38734478 + 38734479.

It is an arithmetic number, because the mean of its divisors is an integer number (38734479).

Almost surely, 2^77468957 is an apocalyptic number.

It is an amenable number.

77468957 is a deficient number, since it is larger than the sum of its proper divisors (1).

77468957 is an equidigital number, since it uses as much as digits as its factorization.

77468957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The square root of 77468957 is about 8801.6451303151. The cubic root of 77468957 is about 426.2940159165.

The spelling of 77468957 in words is "seventy-seven million, four hundred sixty-eight thousand, nine hundred fifty-seven".