197146077 has 4 divisors (see below), whose sum is σ = 262861440. Its totient is φ = 131430716.

The previous prime is 197146073. The next prime is 197146091. The reversal of 197146077 is 770641791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 770641791 = 3 ⋅256880597.

It is a cyclic number.

It is not a de Polignac number, because 197146077 - 2² = 197146073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197146073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32857677 + ... + 32857682.

It is an arithmetic number, because the mean of its divisors is an integer number (65715360).

Almost surely, 2^197146077 is an apocalyptic number.

It is an amenable number.

197146077 is a deficient number, since it is larger than the sum of its proper divisors (65715363).

197146077 is an equidigital number, since it uses as much as digits as its factorization.

197146077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65715362.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 197146077 is about 14040.8716609760. The cubic root of 197146077 is about 582.0085702733.

The spelling of 197146077 in words is "one hundred ninety-seven million, one hundred forty-six thousand, seventy-seven".