77023811 has 2 divisors, whose sum is σ = 77023812. Its totient is φ = 77023810.

The previous prime is 77023801. The next prime is 77023819. The reversal of 77023811 is 11832077.

It is a strong prime.

It is an emirp because it is prime and its reverse (11832077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77023811 - 2²² = 72829507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77023819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38511905 + 38511906.

It is an arithmetic number, because the mean of its divisors is an integer number (38511906).

Almost surely, 2^77023811 is an apocalyptic number.

77023811 is a deficient number, since it is larger than the sum of its proper divisors (1).

77023811 is an equidigital number, since it uses as much as digits as its factorization.

77023811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 77023811 is about 8776.3210401626. The cubic root of 77023811 is about 425.4759346475.

Adding to 77023811 its reverse (11832077), we get a palindrome (88855888).

The spelling of 77023811 in words is "seventy-seven million, twenty-three thousand, eight hundred eleven".