78988067 has 2 divisors, whose sum is σ = 78988068. Its totient is φ = 78988066.

The previous prime is 78988057. The next prime is 78988097. The reversal of 78988067 is 76088987.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78988067 - 2¹⁶ = 78922531 is a prime.

It is a super-2 number, since 2×78988067² = 12478229456792978, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78988027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39494033 + 39494034.

It is an arithmetic number, because the mean of its divisors is an integer number (39494034).

Almost surely, 2^78988067 is an apocalyptic number.

78988067 is a deficient number, since it is larger than the sum of its proper divisors (1).

78988067 is an equidigital number, since it uses as much as digits as its factorization.

78988067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 78988067 is about 8887.5231082681. The cubic root of 78988067 is about 429.0624371427.

The spelling of 78988067 in words is "seventy-eight million, nine hundred eighty-eight thousand, sixty-seven".