77630023 has 2 divisors, whose sum is σ = 77630024. Its totient is φ = 77630022.

The previous prime is 77629999. The next prime is 77630039. The reversal of 77630023 is 32003677.

It is a strong prime.

It is an emirp because it is prime and its reverse (32003677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77630023 - 2⁹ = 77629511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77629973 and 77630000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77630053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38815011 + 38815012.

It is an arithmetic number, because the mean of its divisors is an integer number (38815012).

Almost surely, 2^77630023 is an apocalyptic number.

77630023 is a deficient number, since it is larger than the sum of its proper divisors (1).

77630023 is an equidigital number, since it uses as much as digits as its factorization.

77630023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 77630023 is about 8810.7901461787. The cubic root of 77630023 is about 426.5892479025.

The spelling of 77630023 in words is "seventy-seven million, six hundred thirty thousand, twenty-three".