77782963 has 2 divisors, whose sum is σ = 77782964. Its totient is φ = 77782962.

The previous prime is 77782961. The next prime is 77782967. The reversal of 77782963 is 36928777.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77782963 - 2¹ = 77782961 is a prime.

Together with 77782961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77782961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38891481 + 38891482.

It is an arithmetic number, because the mean of its divisors is an integer number (38891482).

Almost surely, 2^77782963 is an apocalyptic number.

77782963 is a deficient number, since it is larger than the sum of its proper divisors (1).

77782963 is an equidigital number, since it uses as much as digits as its factorization.

77782963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 49.

The square root of 77782963 is about 8819.4650064502. The cubic root of 77782963 is about 426.8692072911.

The spelling of 77782963 in words is "seventy-seven million, seven hundred eighty-two thousand, nine hundred sixty-three".