69061081 has 4 divisors (see below), whose sum is σ = 69460452. Its totient is φ = 68661712.

The previous prime is 69061079. The next prime is 69061127. The reversal of 69061081 is 18016096.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59043856 + 10017225 = 7684^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 69061081 - 2¹ = 69061079 is a prime.

It is a super-2 number, since 2×69061081² = 9538865817777122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69061481) 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, 199426 + ... + 199771.

It is an arithmetic number, because the mean of its divisors is an integer number (17365113).

Almost surely, 2^69061081 is an apocalyptic number.

It is an amenable number.

69061081 is a deficient number, since it is larger than the sum of its proper divisors (399371).

69061081 is a wasteful number, since it uses less digits than its factorization.

69061081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399370.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 69061081 is about 8310.2996937535. The cubic root of 69061081 is about 410.2775851731.

The spelling of 69061081 in words is "sixty-nine million, sixty-one thousand, eighty-one".