69134981 has 4 divisors (see below), whose sum is σ = 71003532. Its totient is φ = 67266432.

The previous prime is 69134969. The next prime is 69134993. The reversal of 69134981 is 18943196.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (69134969) and next prime (69134993).

It can be written as a sum of positive squares in 2 ways, for example, as 58277956 + 10857025 = 7634^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 69134981 - 2⁶ = 69134917 is a prime.

It is a super-2 number, since 2×69134981² = 9559291195740722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69134911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934220 + ... + 934293.

It is an arithmetic number, because the mean of its divisors is an integer number (17750883).

Almost surely, 2^69134981 is an apocalyptic number.

It is an amenable number.

69134981 is a deficient number, since it is larger than the sum of its proper divisors (1868551).

69134981 is a wasteful number, since it uses less digits than its factorization.

69134981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868550.

The product of its digits is 46656, while the sum is 41.

The square root of 69134981 is about 8314.7447946404. The cubic root of 69134981 is about 410.4238745394.

The spelling of 69134981 in words is "sixty-nine million, one hundred thirty-four thousand, nine hundred eighty-one".