137623387 has 8 divisors (see below), whose sum is σ = 154192752. Its totient is φ = 121730400.

The previous prime is 137623361. The next prime is 137623393. The reversal of 137623387 is 783326731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-137623387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137627387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168664 + ... + 169477.

It is an arithmetic number, because the mean of its divisors is an integer number (19274094).

Almost surely, 2^137623387 is an apocalyptic number.

137623387 is a deficient number, since it is larger than the sum of its proper divisors (16569365).

137623387 is a wasteful number, since it uses less digits than its factorization.

137623387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338189.

The product of its digits is 127008, while the sum is 40.

The square root of 137623387 is about 11731.2994591392. The cubic root of 137623387 is about 516.2943993848.

The spelling of 137623387 in words is "one hundred thirty-seven million, six hundred twenty-three thousand, three hundred eighty-seven".