69890137 has 2 divisors, whose sum is σ = 69890138. Its totient is φ = 69890136.

The previous prime is 69890131. The next prime is 69890141. The reversal of 69890137 is 73109896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57471561 + 12418576 = 7581^2 + 3524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69890137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69890093 and 69890102.

It is not a weakly prime, because it can be changed into another prime (69890131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34945068 + 34945069.

It is an arithmetic number, because the mean of its divisors is an integer number (34945069).

Almost surely, 2^69890137 is an apocalyptic number.

It is an amenable number.

69890137 is a deficient number, since it is larger than the sum of its proper divisors (1).

69890137 is an equidigital number, since it uses as much as digits as its factorization.

69890137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 69890137 is about 8360.0321171632. The cubic root of 69890137 is about 411.9128091013.

The spelling of 69890137 in words is "sixty-nine million, eight hundred ninety thousand, one hundred thirty-seven".