137676021 has 32 divisors (see below), whose sum is σ = 218400000. Its totient is φ = 75479040.

The previous prime is 137676017. The next prime is 137676041. The reversal of 137676021 is 120676731.

It is not a de Polignac number, because 137676021 - 2² = 137676017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137676041) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 109605 + ... + 110853.

It is an arithmetic number, because the mean of its divisors is an integer number (6825000).

Almost surely, 2^137676021 is an apocalyptic number.

It is an amenable number.

137676021 is a deficient number, since it is larger than the sum of its proper divisors (80723979).

137676021 is a wasteful number, since it uses less digits than its factorization.

137676021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 137676021 is about 11733.5425596876. The cubic root of 137676021 is about 516.3602098463.

The spelling of 137676021 in words is "one hundred thirty-seven million, six hundred seventy-six thousand, twenty-one".