197678078 has 16 divisors (see below), whose sum is σ = 322917840. Its totient is φ = 90209856.

The previous prime is 197678059. The next prime is 197678101. The reversal of 197678078 is 870876791.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40400 + ... + 45027.

It is an arithmetic number, because the mean of its divisors is an integer number (20182365).

Almost surely, 2^197678078 is an apocalyptic number.

197678078 is a deficient number, since it is larger than the sum of its proper divisors (125239762).

197678078 is a wasteful number, since it uses less digits than its factorization.

197678078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85531.

The product of its (nonzero) digits is 1185408, while the sum is 53.

The square root of 197678078 is about 14059.8036259402. The cubic root of 197678078 is about 582.5316190540.

The spelling of 197678078 in words is "one hundred ninety-seven million, six hundred seventy-eight thousand, seventy-eight".