197490767 has 4 divisors (see below), whose sum is σ = 197570736. Its totient is φ = 197410800.

The previous prime is 197490749. The next prime is 197490779. The reversal of 197490767 is 767094791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197490767 - 2¹⁶ = 197425231 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 (197490707) 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, 36158 + ... + 41259.

It is an arithmetic number, because the mean of its divisors is an integer number (49392684).

Almost surely, 2^197490767 is an apocalyptic number.

197490767 is a deficient number, since it is larger than the sum of its proper divisors (79969).

197490767 is an equidigital number, since it uses as much as digits as its factorization.

197490767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79968.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 197490767 is about 14053.1408233178. The cubic root of 197490767 is about 582.3475671796.

The spelling of 197490767 in words is "one hundred ninety-seven million, four hundred ninety thousand, seven hundred sixty-seven".