137648427 has 8 divisors (see below), whose sum is σ = 209750016. Its totient is φ = 78656232.

The previous prime is 137648417. The next prime is 137648437. The reversal of 137648427 is 724846731.

It is an interprime number because it is at equal distance from previous prime (137648417) and next prime (137648437).

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

It is not a de Polignac number, because 137648427 - 2⁴ = 137648411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137648417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3277323 + ... + 3277364.

It is an arithmetic number, because the mean of its divisors is an integer number (26218752).

Almost surely, 2^137648427 is an apocalyptic number.

137648427 is a deficient number, since it is larger than the sum of its proper divisors (72101589).

137648427 is an equidigital number, since it uses as much as digits as its factorization.

137648427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554697.

The product of its digits is 225792, while the sum is 42.

The square root of 137648427 is about 11732.3666410490. The cubic root of 137648427 is about 516.3257100219.

It can be divided in two parts, 137648 and 427, that added together give a triangular number (138075 = T₅₂₅).

The spelling of 137648427 in words is "one hundred thirty-seven million, six hundred forty-eight thousand, four hundred twenty-seven".