197678670 has 64 divisors (see below), whose sum is σ = 546241536. Its totient is φ = 44847360.

The previous prime is 197678659. The next prime is 197678681. The reversal of 197678670 is 76876791.

It is a happy number.

197678670 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (197678659) and next prime (197678681).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25335 + ... + 32205.

It is an arithmetic number, because the mean of its divisors is an integer number (8535024).

Almost surely, 2^197678670 is an apocalyptic number.

197678670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197678670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273120768).

197678670 is an abundant number, since it is smaller than the sum of its proper divisors (348562866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197678670 is a wasteful number, since it uses less digits than its factorization.

197678670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7025.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 197678670 is about 14059.8246788500. The cubic root of 197678670 is about 582.5322005691.

The spelling of 197678670 in words is "one hundred ninety-seven million, six hundred seventy-eight thousand, six hundred seventy".