78067601 has 2 divisors, whose sum is σ = 78067602. Its totient is φ = 78067600.

The previous prime is 78067597. The next prime is 78067603. The reversal of 78067601 is 10676087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71842576 + 6225025 = 8476^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 78067601 - 2² = 78067597 is a prime.

Together with 78067603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78067603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39033800 + 39033801.

It is an arithmetic number, because the mean of its divisors is an integer number (39033801).

Almost surely, 2^78067601 is an apocalyptic number.

It is an amenable number.

78067601 is a deficient number, since it is larger than the sum of its proper divisors (1).

78067601 is an equidigital number, since it uses as much as digits as its factorization.

78067601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 78067601 is about 8835.5871904475. The cubic root of 78067601 is about 427.3892667155.

It can be divided in two parts, 7 and 8067601, that added together give a palindrome (8067608).

The spelling of 78067601 in words is "seventy-eight million, sixty-seven thousand, six hundred one".