77631067 has 2 divisors, whose sum is σ = 77631068. Its totient is φ = 77631066.

The previous prime is 77631053. The next prime is 77631089. The reversal of 77631067 is 76013677.

It is a weak prime.

It is an emirp because it is prime and its reverse (76013677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77631067 - 2⁷ = 77630939 is a prime.

It is not a weakly prime, because it can be changed into another prime (77631007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38815533 + 38815534.

It is an arithmetic number, because the mean of its divisors is an integer number (38815534).

Almost surely, 2^77631067 is an apocalyptic number.

77631067 is a deficient number, since it is larger than the sum of its proper divisors (1).

77631067 is an equidigital number, since it uses as much as digits as its factorization.

77631067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 77631067 is about 8810.8493915173. The cubic root of 77631067 is about 426.5911602090.

The spelling of 77631067 in words is "seventy-seven million, six hundred thirty-one thousand, sixty-seven".