67278897 has 32 divisors (see below), whose sum is σ = 117596160. Its totient is φ = 37201680.

The previous prime is 67278881. The next prime is 67278899. The reversal of 67278897 is 79887276.

It is not a de Polignac number, because 67278897 - 2⁴ = 67278881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67278899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118 + ... + 11600.

It is an arithmetic number, because the mean of its divisors is an integer number (3674880).

Almost surely, 2^67278897 is an apocalyptic number.

It is an amenable number.

67278897 is a deficient number, since it is larger than the sum of its proper divisors (50317263).

67278897 is a wasteful number, since it uses less digits than its factorization.

67278897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11530 (or 11524 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 67278897 is about 8202.3714253867. The cubic root of 67278897 is about 406.7175888785.

The spelling of 67278897 in words is "sixty-seven million, two hundred seventy-eight thousand, eight hundred ninety-seven".