197626463 has 4 divisors (see below), whose sum is σ = 197765808. Its totient is φ = 197487120.

The previous prime is 197626439. The next prime is 197626477. The reversal of 197626463 is 364626791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364626791 = 79 ⋅4615529.

It is a cyclic number.

It is not a de Polignac number, because 197626463 - 2¹⁴ = 197610079 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 (197626433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67523 + ... + 70388.

It is an arithmetic number, because the mean of its divisors is an integer number (49441452).

Almost surely, 2^197626463 is an apocalyptic number.

197626463 is a deficient number, since it is larger than the sum of its proper divisors (139345).

197626463 is a wasteful number, since it uses less digits than its factorization.

197626463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139344.

The product of its digits is 326592, while the sum is 44.

The square root of 197626463 is about 14057.9679541533. The cubic root of 197626463 is about 582.4809137403.

The spelling of 197626463 in words is "one hundred ninety-seven million, six hundred twenty-six thousand, four hundred sixty-three".