75770069 has 8 divisors (see below), whose sum is σ = 78625560. Its totient is φ = 72930816.

The previous prime is 75770041. The next prime is 75770077. The reversal of 75770069 is 96007757.

It can be written as a sum of positive squares in 4 ways, for example, as 27300625 + 48469444 = 5225^2 + 6962^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75770069 is a prime.

It is a super-2 number, since 2×75770069² = 11482206712529522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75770029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5897 + ... + 13649.

It is an arithmetic number, because the mean of its divisors is an integer number (9828195).

Almost surely, 2^75770069 is an apocalyptic number.

It is an amenable number.

75770069 is a deficient number, since it is larger than the sum of its proper divisors (2855491).

75770069 is a wasteful number, since it uses less digits than its factorization.

75770069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8119.

The product of its (nonzero) digits is 92610, while the sum is 41.

The square root of 75770069 is about 8704.6004503366. The cubic root of 75770069 is about 423.1547571086.

The spelling of 75770069 in words is "seventy-five million, seven hundred seventy thousand, sixty-nine".