197632387 has 2 divisors, whose sum is σ = 197632388. Its totient is φ = 197632386.

The previous prime is 197632373. The next prime is 197632397. The reversal of 197632387 is 783236791.

It is a happy number.

197632387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197632387 is a prime.

It is not a weakly prime, because it can be changed into another prime (197632397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98816193 + 98816194.

It is an arithmetic number, because the mean of its divisors is an integer number (98816194).

Almost surely, 2^197632387 is an apocalyptic number.

197632387 is a deficient number, since it is larger than the sum of its proper divisors (1).

197632387 is an equidigital number, since it uses as much as digits as its factorization.

197632387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 197632387 is about 14058.1786515893. The cubic root of 197632387 is about 582.4867337815.

The spelling of 197632387 in words is "one hundred ninety-seven million, six hundred thirty-two thousand, three hundred eighty-seven".