197863623 has 12 divisors (see below), whose sum is σ = 286102648. Its totient is φ = 131770800.

The previous prime is 197863577. The next prime is 197863657. The reversal of 197863623 is 326368791.

197863623 is a `hidden beast` number, since 1 + 9 + 7 + 8 + 636 + 2 + 3 = 666.

It is not a de Polignac number, because 197863623 - 2²² = 193669319 is a prime.

It is a super-2 number, since 2×197863623² = 78300026613372258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197863123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2053 + ... + 19998.

Almost surely, 2^197863623 is an apocalyptic number.

197863623 is a deficient number, since it is larger than the sum of its proper divisors (88239025).

197863623 is a wasteful number, since it uses less digits than its factorization.

197863623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23054 (or 23051 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 197863623 is about 14066.4004990616. The cubic root of 197863623 is about 582.7138210643.

It can be divided in two parts, 19786 and 3623, that added together give a square (23409 = 153²).

The spelling of 197863623 in words is "one hundred ninety-seven million, eight hundred sixty-three thousand, six hundred twenty-three".