78672367 has 2 divisors, whose sum is σ = 78672368. Its totient is φ = 78672366.

The previous prime is 78672361. The next prime is 78672383. The reversal of 78672367 is 76327687.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78672367 - 2⁷ = 78672239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78672361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39336183 + 39336184.

It is an arithmetic number, because the mean of its divisors is an integer number (39336184).

Almost surely, 2^78672367 is an apocalyptic number.

78672367 is a deficient number, since it is larger than the sum of its proper divisors (1).

78672367 is an equidigital number, since it uses as much as digits as its factorization.

78672367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 46.

The square root of 78672367 is about 8869.7444720804. The cubic root of 78672367 is about 428.4900474100.

It can be divided in two parts, 786 and 72367, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 78672367 in words is "seventy-eight million, six hundred seventy-two thousand, three hundred sixty-seven".