69438137 has 4 divisors (see below), whose sum is σ = 69509760. Its totient is φ = 69366516.

The previous prime is 69438101. The next prime is 69438143. The reversal of 69438137 is 73183496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69438137 - 2⁶ = 69438073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69438094 and 69438103.

It is not an unprimeable number, because it can be changed into a prime (69438167) 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, 34337 + ... + 36302.

It is an arithmetic number, because the mean of its divisors is an integer number (17377440).

Almost surely, 2^69438137 is an apocalyptic number.

It is an amenable number.

69438137 is a deficient number, since it is larger than the sum of its proper divisors (71623).

69438137 is an equidigital number, since it uses as much as digits as its factorization.

69438137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71622.

The product of its digits is 108864, while the sum is 41.

The square root of 69438137 is about 8332.9548780730. The cubic root of 69438137 is about 411.0229009484.

The spelling of 69438137 in words is "sixty-nine million, four hundred thirty-eight thousand, one hundred thirty-seven".