147644636 has 12 divisors (see below), whose sum is σ = 269612112. Its totient is φ = 70612608.

The previous prime is 147644621. The next prime is 147644647. The reversal of 147644636 is 636446741.

It is a junction number, because it is equal to n+sod(n) for n = 147644593 and 147644602.

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, 802325 + ... + 802508.

It is an arithmetic number, because the mean of its divisors is an integer number (22467676).

Almost surely, 2^147644636 is an apocalyptic number.

It is an amenable number.

147644636 is a deficient number, since it is larger than the sum of its proper divisors (121967476).

147644636 is a wasteful number, since it uses less digits than its factorization.

147644636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604860 (or 1604858 counting only the distinct ones).

The product of its digits is 290304, while the sum is 41.

The square root of 147644636 is about 12150.9109123555. The cubic root of 147644636 is about 528.5335467930.

The spelling of 147644636 in words is "one hundred forty-seven million, six hundred forty-four thousand, six hundred thirty-six".