67078971 has 12 divisors (see below), whose sum is σ = 101104848. Its totient is φ = 42774864.

The previous prime is 67078961. The next prime is 67078981. The reversal of 67078971 is 17987076.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67078961) and next prime (67078981).

It is not a de Polignac number, because 67078971 - 2¹⁰ = 67077947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67078931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161820 + ... + 162233.

It is an arithmetic number, because the mean of its divisors is an integer number (8425404).

Almost surely, 2^67078971 is an apocalyptic number.

67078971 is a deficient number, since it is larger than the sum of its proper divisors (34025877).

67078971 is a wasteful number, since it uses less digits than its factorization.

67078971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324082 (or 324079 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 67078971 is about 8190.1752728498. The cubic root of 67078971 is about 406.3143217759.

The spelling of 67078971 in words is "sixty-seven million, seventy-eight thousand, nine hundred seventy-one".