78653967 has 12 divisors (see below), whose sum is σ = 121994136. Its totient is φ = 44945040.

The previous prime is 78653963. The next prime is 78653969. The reversal of 78653967 is 76935687.

It is not a de Polignac number, because 78653967 - 2² = 78653963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78653963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267384 + ... + 267677.

It is an arithmetic number, because the mean of its divisors is an integer number (10166178).

Almost surely, 2^78653967 is an apocalyptic number.

78653967 is a deficient number, since it is larger than the sum of its proper divisors (43340169).

78653967 is a wasteful number, since it uses less digits than its factorization.

78653967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535078 (or 535071 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 78653967 is about 8868.7071774865. The cubic root of 78653967 is about 428.4566395274.

The spelling of 78653967 in words is "seventy-eight million, six hundred fifty-three thousand, nine hundred sixty-seven".