197070890 has 16 divisors (see below), whose sum is σ = 355146120. Its totient is φ = 78735360.

The previous prime is 197070833. The next prime is 197070911. The reversal of 197070890 is 98070791.

197070890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 122921569 + 74149321 = 11087^2 + 8611^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2375 + ... + 19994.

Almost surely, 2^197070890 is an apocalyptic number.

197070890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197070890 is a deficient number, since it is larger than the sum of its proper divisors (158075230).

197070890 is a wasteful number, since it uses less digits than its factorization.

197070890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23257.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 197070890 is about 14038.1939721604. The cubic root of 197070890 is about 581.9345726177.

Subtracting from 197070890 its reverse (98070791), we obtain a palindrome (99000099).

The spelling of 197070890 in words is "one hundred ninety-seven million, seventy thousand, eight hundred ninety".