197678079 has 6 divisors (see below), whose sum is σ = 285535016. Its totient is φ = 131785380.

The previous prime is 197678059. The next prime is 197678101. The reversal of 197678079 is 970876791.

It is not a de Polignac number, because 197678079 - 2⁷ = 197677951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197678059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10982107 + ... + 10982124.

Almost surely, 2^197678079 is an apocalyptic number.

197678079 is a deficient number, since it is larger than the sum of its proper divisors (87856937).

197678079 is a wasteful number, since it uses less digits than its factorization.

197678079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21964237 (or 21964234 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The square root of 197678079 is about 14059.8036615025. The cubic root of 197678079 is about 582.5316200362.

The spelling of 197678079 in words is "one hundred ninety-seven million, six hundred seventy-eight thousand, seventy-nine".