77045077 has 2 divisors, whose sum is σ = 77045078. Its totient is φ = 77045076.

The previous prime is 77045053. The next prime is 77045099. The reversal of 77045077 is 77054077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76983076 + 62001 = 8774^2 + 249^2 .

It is an emirp because it is prime and its reverse (77054077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77045077 - 2¹⁹ = 76520789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77045477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38522538 + 38522539.

It is an arithmetic number, because the mean of its divisors is an integer number (38522539).

Almost surely, 2^77045077 is an apocalyptic number.

It is an amenable number.

77045077 is a deficient number, since it is larger than the sum of its proper divisors (1).

77045077 is an equidigital number, since it uses as much as digits as its factorization.

77045077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48020, while the sum is 37.

The square root of 77045077 is about 8777.5325120446. The cubic root of 77045077 is about 425.5150885079.

The spelling of 77045077 in words is "seventy-seven million, forty-five thousand, seventy-seven".