137869647 has 4 divisors (see below), whose sum is σ = 183826200. Its totient is φ = 91913096.

The previous prime is 137869637. The next prime is 137869649. The reversal of 137869647 is 746968731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746968731 = 3 ⋅248989577.

It is a cyclic number.

It is not a de Polignac number, because 137869647 - 2⁶ = 137869583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137869647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137869649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22978272 + ... + 22978277.

It is an arithmetic number, because the mean of its divisors is an integer number (45956550).

Almost surely, 2^137869647 is an apocalyptic number.

137869647 is a deficient number, since it is larger than the sum of its proper divisors (45956553).

137869647 is an equidigital number, since it uses as much as digits as its factorization.

137869647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45956552.

The product of its digits is 1524096, while the sum is 51.

The square root of 137869647 is about 11741.7906215364. The cubic root of 137869647 is about 516.6021641756.

The spelling of 137869647 in words is "one hundred thirty-seven million, eight hundred sixty-nine thousand, six hundred forty-seven".