137673645 has 32 divisors (see below), whose sum is σ = 225045120. Its totient is φ = 71850240.

The previous prime is 137673637. The next prime is 137673673. The reversal of 137673645 is 546376731.

It is a happy number.

It is not a de Polignac number, because 137673645 - 2³ = 137673637 is a prime.

It is a super-3 number, since 3×137673645³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137673597 and 137673606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346587 + ... + 346983.

It is an arithmetic number, because the mean of its divisors is an integer number (7032660).

Almost surely, 2^137673645 is an apocalyptic number.

137673645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137673645 is a deficient number, since it is larger than the sum of its proper divisors (87371475).

137673645 is a wasteful number, since it uses less digits than its factorization.

137673645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845.

The product of its digits is 317520, while the sum is 42.

The square root of 137673645 is about 11733.4413110562. The cubic root of 137673645 is about 516.3572393970.

The spelling of 137673645 in words is "one hundred thirty-seven million, six hundred seventy-three thousand, six hundred forty-five".