137220607 has 4 divisors (see below), whose sum is σ = 139546440. Its totient is φ = 134894776.

The previous prime is 137220571. The next prime is 137220619. The reversal of 137220607 is 706022731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 706022731 = 599 ⋅1178669.

It is a cyclic number.

It is not a de Polignac number, because 137220607 - 2¹⁵ = 137187839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137220007) 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 3 ways as a sum of consecutive naturals, for example, 1162828 + ... + 1162945.

It is an arithmetic number, because the mean of its divisors is an integer number (34886610).

Almost surely, 2^137220607 is an apocalyptic number.

137220607 is a deficient number, since it is larger than the sum of its proper divisors (2325833).

137220607 is an equidigital number, since it uses as much as digits as its factorization.

137220607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325832.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 137220607 is about 11714.1199840193. The cubic root of 137220607 is about 515.7902305704.

The spelling of 137220607 in words is "one hundred thirty-seven million, two hundred twenty thousand, six hundred seven".