78196671 has 24 divisors (see below), whose sum is σ = 133870464. Its totient is φ = 44682840.

The previous prime is 78196669. The next prime is 78196691. The reversal of 78196671 is 17669187.

It is not a de Polignac number, because 78196671 - 2¹ = 78196669 is a prime.

It is a super-2 number, since 2×78196671² = 12229438710964482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78196621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21285 + ... + 24686.

It is an arithmetic number, because the mean of its divisors is an integer number (5577936).

Almost surely, 2^78196671 is an apocalyptic number.

78196671 is a deficient number, since it is larger than the sum of its proper divisors (55673793).

78196671 is an equidigital number, since it uses as much as digits as its factorization.

78196671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45993 (or 45981 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 78196671 is about 8842.8881594194. Note that the first 3 decimals coincide. The cubic root of 78196671 is about 427.6246727791.

The spelling of 78196671 in words is "seventy-eight million, one hundred ninety-six thousand, six hundred seventy-one".