97143636 has 12 divisors (see below), whose sum is σ = 226668512. Its totient is φ = 32381208.

The previous prime is 97143617. The next prime is 97143643. The reversal of 97143636 is 63634179.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 97143594 and 97143603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4047640 + ... + 4047663.

Almost surely, 2^97143636 is an apocalyptic number.

It is an amenable number.

97143636 is an abundant number, since it is smaller than the sum of its proper divisors (129524876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97143636 is a wasteful number, since it uses less digits than its factorization.

97143636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8095310 (or 8095308 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 97143636 is about 9856.1471174085. The cubic root of 97143636 is about 459.6967692792.

It can be divided in two parts, 97143 and 636, that added together give a palindrome (97779).

The spelling of 97143636 in words is "ninety-seven million, one hundred forty-three thousand, six hundred thirty-six".