70066769 has 4 divisors (see below), whose sum is σ = 70085796. Its totient is φ = 70047744.

The previous prime is 70066751. The next prime is 70066771. The reversal of 70066769 is 96766007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96766007 = 13 ⋅7443539.

It can be written as a sum of positive squares in 2 ways, for example, as 15484225 + 54582544 = 3935^2 + 7388^2 .

It is a cyclic number.

It is not a de Polignac number, because 70066769 - 2¹² = 70062673 is a prime.

It is a super-2 number, since 2×70066769² = 9818704236198722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70066069) 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, 2024 + ... + 12009.

It is an arithmetic number, because the mean of its divisors is an integer number (17521449).

Almost surely, 2^70066769 is an apocalyptic number.

It is an amenable number.

70066769 is a deficient number, since it is larger than the sum of its proper divisors (19027).

70066769 is a wasteful number, since it uses less digits than its factorization.

70066769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19026.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 70066769 is about 8370.5895252366. The cubic root of 70066769 is about 412.2595236254.

The spelling of 70066769 in words is "seventy million, sixty-six thousand, seven hundred sixty-nine".